Science Images for September, 2014
About Half of the Water You Drink is Older than the Sun
New research reveals that as much as one half of all of Earth’s current water supply is older than the Sun.
An international team of scientists led by Ilse Cleeves at the University of Michigan looked back into creation of Earth and our solar system to find out where all of the water came from.
Some scientists think Earth’s supply of life-sustaining H2O was the result of chemical reactions that took place as the Sun and solar system began forming some 4.6 billion years ago.
Others theorize that today’s water originated about a million years earlier in the cold recesses of interstellar space from a molecular cloud that later provided material to form the sun and planets.
To reach their findings, Cleeves and her colleagues simulated the chemistry of our solar system as it was forming and then compared the ratio of two slightly different types of water, one that was plain H2O and the other, ‘heavier type’, that had been enriched with deuterium – an isotope of the hydrogen molecule.
The researchers found that the water in Earth’s oceans as ice found in comets have a higher ratio of the ‘heavy water’ to the deuterium free water than the Sun contains.
“That’s obviously a clue for what’s going on and it suggests that that very cold chemistry is required to produce these very large enrichments in the heavy isotopes deuterium in the water,” said Dr. Conel Alexander from the Carnegie Institution for Science, who was a member of the research team.
Alexander said that this very cold chemistry, about 10 to 30 degrees Kelvin – -263.15 to -243.15 Celsius – had to have ionizing radiation around in order to overcome the activation barriers that stop typical chemistry that takes place at the extremely cold temperatures.
The scientists considered two possible locations that may have allowed the cold chemistry.
One would be in the ancient molecular clouds (also called stellar nurseries) where stars form.
The other location would be in very cold regions of protoplanetary disks, which form solar system bodies such as planets, moons, asteroids, and others that surround developing stars.
But Cleeves realized that young stars that are surrounded by these planet-forming disks produce some very intense solar winds.
These solar winds, according to Alexander, would prevent galactic cosmic rays – one of the major sources of ionizing radiation – from even entering those disks, something that may very well stop deuterium-enriched water from forming.
This realization helped Cleeves create a complex model for the chemistry that existed within the planetary disks.
Alexander said the model did indeed show that deuterium-enriched water cannot be made in the disks, which led the group to conclude that it was produced within molecular clouds found in the interstellar medium.
“Ultimately, the intriguing idea is that you’re bringing in ices from the interstellar medium, pretty much intact, and those ices have a lot of organic material in them and some people have speculated that the organic material in meteorites and comets may have helped kick-start life,” said Alexander.
“If that’s true, and our solar system is fairly typical, then fairly similar superable organic material and water/ice is coming into most forming solar systems.”
This could, Alexander said, make the potential for life in other solar systems significantly more probable.
You can listen to the Science World radio interview with Dr. Conel Alexander either through the player below or check out the entire show at the times and places listed in the right side column.
Science Scanner: Voters Say Pluto is a Planet, Sense of Touch Explored, Promising New Way to Stop Spread of Cancer, High-Tech Bracelet Secures Computers
People Vote to Make Pluto a Planet Again
Until 2006, school children were taught – and most people considered the matter settled – that Pluto is one of the nine planets of the solar system. But that year members of the International Astronomical Union (IAU) – which is responsible for naming and classifying celestial objects – voted to define the characteristics that officially make a planet a planet.
And according to the formally adopted definition, Pluto could no longer be considered a planet. It was demoted to dwarf planet status.
The Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts felt it was time to reexamine IAU’s definition of a planet by holding a debate that featured three leading experts in planetary science.
After listening to all sides of the debate, the audience voted on what a planet is or isn’t and whether or not Pluto is a planet.
The audience voted for a definition submitted by Dr. Dimitar Sasselov, director of the Harvard Origins of Life Initiative, who defined a planet as “the smallest spherical lump of matter that formed around stars or stellar remnants.” The also voted that Pluto was a planet.
Scientists Offer New Theory on How Our Sense of Touch is Produced
Have you ever wondered how our sense of touch is produced?
Neuroscientists from the University of Chicago, writing in the journal Trends in Neurosciences, said their research indicates a variety of different nerves and skin receptors which sense pressure, temperature, and vibrations on or around the skin all work together to produce our sense of touch.
The findings made by the Chicago scientists dispute long-held theories that indicate there are separate and distinct groups of nerves and skins receptors that are each responsible for various aspects of touch, such as an object’s texture or its shape.
To make their findings, the researchers analyzed more than 100 previously conducted studies conducted over the past 57 years.
New Therapy to Keep Cancer from Spreading Shows Promise
Stanford researchers develop protein therapy to stop metastasis (Stanford University)
Researchers at Stanford University may be close to developing a new way to slow or even stop cancer from spreading or metastasizing from one part of the body to others without the risks and severe side-effects of chemotherapy.
The California scientists, whose findings were published in the journal Nature Chemical Biology, developed what they call an ‘evolved’ protein therapy.
Their new metastasis prevention therapy interrupts the process that causes cancer cells to separate from original tumor locations, enter the bloodstream and travel to other locations throughout the body where the more aggressive and deadly cancer growths can form.
The researchers found that cancer spreads when two proteins – Axl and Growth arrest-specific 6 (Gas6) interact with each other.
To keep this interaction from taking place, the scientists created a harmless version of the Axl protein. This harmless protein, acting like a decoy, attaches itself to the Gas6 protein within the bloodstream and keeps the harmful Axl protein from being activated.
The scientists said that they used their new experimental protein therapy to stop the spread of ovarian and breast cancer in lab mice.
New Bracelet Device Helps Keep Computer Systems Safer and More Secure
Keeping important and sensitive information safe and secure on computer and network systems is incredibly challenging.
Researchers at Dartmouth College say their Zero-Effort Bilateral Recurring Authentication (ZEBRA) method of computer security continuously confirms the identity of a user as they work at their terminal.
When the system detects that an authorized user is no longer working with the terminal, it automatically logs them out, preventing others from viewing or accessing their material.
The researchers said that despite the popular and effective authentication systems used today – such as those that rely on passwords, finger prints or eye scans – users often forget to logout when they step-away from their computer, leaving it open and vulnerable to security risks.
Users accessing ZEBRA-protected systems wear a specially designed bracelet that includes a built-in accelerometer, gyroscope and radio on their dominant wrist. The bracelet interacts with the computer or terminal to continuously monitor and authenticate authorized use. Once the authorized user steps away from the computer for a predetermined length of time the system automatically logs the user out.
Report – Record High Amount of CO2 will be Released in 2014
A new report by the Global Carbon Project, an international science/environmental group, shows that the emission of carbon dioxide, one of the world’s top greenhouse gases – which scientists say leads to global warming – will not only rise once again in 2014, but will set a record high of 40 billion metric tons.
As the UN prepares to host its one day Climate Summit Tuesday at its New York headquarters, the report, which is an annual update to the group’s Global Carbon Budget, indicated that CO2 emissions that stem from fossil-fuel combustion and the production of cement grew by rate of 2.3 percent in 2013, with a record 36 billion metric tons of CO2 being produced. The report also predicted an additional 2.5 percent increase in CO2 emissions for 2014.
For a 66 percent chance of maintaining the UN’s Framework Convention on Climate Change goal of keeping average global warming to no more than 2 degrees Celsius, this new report indicates that the total amount of future CO2 emissions can’t exceed more than 1,200 metric tons.
The Global Carbon Project estimates that, at the current CO2 emission rate, this 1,200 metric ton quota would be used up in about 30 years.
The report shows that global CO2 emissions must be reduced by more than 5 percent each year over the next several decades to keep global warming below the 2 degrees Celsius goal.
Climate scientists contributing to the report said that unless new technologies to store carbon in the ground are developed and widely deployed, more than half of all the planet’s fossil fuel reserves may need to be left untouched to keep CO2 emissions below the 1,200 metric ton total.
“The human influence on climate change is clear,” said Professor Corinne Le Quéré, director of the Tyndall Center for Climate Change at the UK’s University of East Anglia in a press release. “We need substantial and sustained reductions in CO2 emissions from burning fossil fuels if we are to limit global climate change. We are nowhere near the commitments necessary to stay below 2 degrees Celsius of climate change, a level that will be already challenging to manage for most countries around the world, even for rich nations.”
Along with the CO2 emission projection for 2014, the update to the Global Carbon Budget also breaks the 2013 carbon dioxide emissions report into a country by country as well as a per capita breakdown.
Among the report’s key facts and figures:
- China, the USA, the EU and India are the largest emitters – together accounting for 58 per cent of emissions.
- China’s CO2 emissions grew by 4.2 per cent in 2013, the USA’s grew by 2.9 per cent, and India’s emissions grew by 5.1 per cent.
- The EU decreased its emissions by 1.8 per cent, though it continues to export a third of its emissions to China and other producers through imported goods and services.
- China’s CO2 emissions per person overtook emissions in the EU for the first time in 2013. China’s emissions are now larger than the US and EU combined. 16 per cent of China’s emissions are for goods and services which are exported elsewhere.
- CO2 emissions are caused primarily by burning fossil fuels, as well as by cement production and deforestation. Deforestation accounts for 8 per cent of CO2 emissions.
The Global Carbon Budget 2014 also includes a number of individual studies conducted by various research organizations who contributed to the report. These studies were published the journals, Nature Climate Change, Nature Geoscience and Earth System Science Data Discussions.
History of atmospheric CO2 from 800,000 years ago until January, 2012 (NOAA)
Two Martian Probes Set to Orbit Red Planet
Two unmanned spacecraft headed to Mars, one launched by the United States and the other by India, will soon reach the Red Planet within days of each other.
NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) probe, launched November 18 is set for insertion into Mars orbit (MOI) on Sunday, September 21. India’s first interplanetary spacecraft, Mars Orbiter Mission (MOM), also known as Mangalyan, launched November 5 will be put into orbit around Mars on Wednesday, September 24.
MAVEN will study the specific processes that led to Mars losing much of its atmosphere about 3.5 billion years ago, something that could provide scientists with new insight about the evolution of the Red Planet as well as help solve the mystery of what happened to its water and carbon dioxide.
Some scientists say that billions of years ago, Mars had a rich atmosphere and was a warm and wet world. Others have speculated that the planet may have also had the right conditions to support microbial life.
University of Michigan Professor Stephen Bougher, who is also an investigator with the MAVEN team, told us that that it’s possible that the Martian H2O could have gone underground or was simple lost to space.
Among the immediate goals of the MAVEN mission, according to Bougher, is to find out how Mars’s upper atmosphere is connected to the solar wind that blows past the planet and how it strips away that upper atmosphere.
It’s possible that at some time during the early history of Mars the sun may have been much more active than today, producing a much more powerful solar wind that could have swept away Mars’ formerly lush atmosphere away like a broom sweeps dust and dirt.
Once scientists get answers to those present day questions, Bougher said the MAVEN team could run their computer models backwards in time to calculate what might have happened to Mars’s climate billions of years ago.
Data sent back to Earth from the MAVEN spacecraft could also help scientists gain a greater understanding of climate change on the planet and learn more of the history of planetary habitability.
The Indian Space Research Organization’s (ISRO) MOM satellite will orbit Mars for about a year, exploring the Martian surface and atmosphere.
Although not directly connected with ISRO’s mission, Bougher said that India’s spacecraft won’t get as close to the planet as MAVEN.
MOM also has a methane detection and measurement instrument onboard that will look for signs of the gas in the Martian atmosphere.
The detection of methane on Mars is considered by some to be controversial, especially since most methane here on Earth is produced biologically (such as from cow flatulence). But, some (less than 1%) of our methane has been produced by non-biological methods.
While some previous Earth based observations indicated the presence of methane on Mars, a year ago NASA delivered disappointing news that “after extensive tests” its Curiosity Rover could not find any sign of the gas on the Red Planet.
Along with its scientific goals of studying the Red Planet, ISRO has said that one of MOM’s other main objectives is to allow the Indian space program to develop the technologies required to design, plan, manage and operate an interplanetary mission.
You can listen to the Science World radio interview with Professor Stephen Bougher either through the player below or check out the entire show at the times and places listed in the right side column.
Science Scanner: Ultra-Fast Data Transmission, Why Humans Look Different, Exoplanet Makes Young Sun Act Old, Scientists Find New Branch of European Family Tree
California Scientists Develop Radio Based Ultra-Fast Data Transmission System
Back in 2012, an international team of scientists led by electrical engineering professor Alan Willner, of the University of Southern California, made news when they announced that they were able to transmit data at incredibly high speeds with a system that used eight twisted light beams.
Now another team led by Willner has been able to send high-speed data transmission using twisted radio beams, instead of light.
While this new radio wave based high-speed data transmission system sends data at a relatively slower rate – of 32 gigabits per second versus the transmission rate of 2.56 terabits per second with the twisted light system – the researchers said that radio based system is better able to overcome some transmission/reception difficulties than the optical system.
Put in perspective, the twisted radio beam system transmitting at a rate of 32 gigabits per second is fast enough to transfer more than 10.5 HD movies in one second. The twisted-light system was able to send more than 85,000 times more data per second than is possible with current broadband cable technology.
Evolution Made Humans Look Different from Each Other
Have you ever wondered why humans look so different from each other?
It turns out, according to a new study just published in the journal Nature that the wide variety of faces of the human species is due to evolutionary changes that made each of us unique and easy to recognize.
The researchers from the University of California, Berkeley, said that these changes were necessitated by how we communicate. Rather than using smells and sounds like other animal species, humans rely on highly visual social interactions to interact and tell each other apart.
“The idea that social interaction may have facilitated or led to selection for us to be individually recognizable implies that human social structure has driven the evolution of how we look,” said coauthor Michael Nachman, director of the University of California, Berkeley’s Museum of Vertebrate Zoology.
Massive Exoplanet Causes Its Young Sun to Act Old
Astronomers, using new data from NASA’s Chandra X-ray observatory, have found evidence that a huge exoplanet is causing its relatively young sun to behave as if it were a senior citizen.
The star, called WASP-18 and its closely orbiting massive planet named WASP-18b are located about 330 light years from Earth.
Scientists say that young stars have a tendency to be quite active, having much stronger magnetic fields, exploding with larger solar flares, and emitting many more powerful X-rays than their older relatives. The intensity of these types of solar activity, according to the astronomers, is associated with the star’s rotation, which usually slows as it gets older.
But after studying the WASP-18, the astronomical team said that they weren’t able to detect any X-rays at all, something that can be expected from much older stars. They figure WASP-18 is about 100 times less active than a star its age should be.
The astronomers believe that the premature aging of WASP-18 is due to tidal forces – like our moon has on Earth’s tides – that are created by the gravitational pull of the massive planet which is disturbing its magnetic field.
Today’s Europeans are a Mix of at Least Three Different Groups of Ancient People
Recent research of ancient DNA has provided evidence that people of European ancestry descended from at least three major and diverse groups of ancestors, including some that until now had been unrecognized.
Previous genetic and archaeological research showed that present-day Europeans descended from the mix of these two ancient groups of people – hunter gatherers from Western Europe and farmers from the Near East who brought agriculture with them to the European continent some 8,500 years ago.
According to the new study, along with these two groups, a newly identified group of ancient people from Northern Eurasia, who didn’t arrive in Europe until after the introduction of agriculture, also contributed to the genetic mix of today’s Europeans.
Researchers from the Harvard Medical School and the University of Tübingen in Germany said that their studies could change current concepts of how groups of people migrating throughout the world thousands of years ago interacted with each other.
To make their findings, which were just published in the journal, Nature, the researchers compared nine ancient genomes to those of modern humans.
“There are at least three major, highly differentiated populations that have contributed substantial amounts of ancestry to almost everybody that has European ancestry today,” said David Reich, from the Harvard Medical School in a news release.
The researchers said that their findings indicate that significant migration of people into Europe from other parts of the world took place later than previously thought.
Some Bacteria are Sneakier Than First Suspected
The emergence and rapid growth of antibiotic resistant bacteria has become a serious worldwide health concern.
The World Health Organization said in its 2014 report on antimicrobial resistance that “without urgent, coordinated action, the world is heading towards a post-antibiotic era, in which common infections and minor injuries, which have been treatable for decades, can once again kill.”
Scientists have found that some infection causing bacteria can quickly evolve and mutate to a point where antibiotics that were created to destroy it become ineffective. But now a team of researchers from three American universities have found that these mutating microbes can be sneakier that had been suspected.
The researchers, writing in the journal Biomicrofluidics, found that among the tools used by bacteria to avoid harm or destruction is a built-in arsenal of hidden genetic weapons that helps it develop a number of different ways to evolve and mutate quickly while under stress due to antibiotic treatments, making the microbes much more adaptable and tougher to beat.
“Bacteria are clever – they have hidden ways to respond to stress that involve re-sculpting their genomes,” said Princeton University biophysicist and team leader, Robert Austin in a press release. “It teaches us that antibiotics have to be used much more carefully than they have been up to this point,” he said.
Rather than using traditional test tubes or petri dishes, the researchers used unique fluid-filled microstructures in their experiments that were developed by Austin and his colleagues. The research team said that they think their new devices represented a more natural environment for their investigations than traditional laboratory implements.
“In complex environments the emergence of resistance can be far more rapid and profound than would be expected from test tube experiments,” Austin said.
In previous studies, the researchers found that there are some “wild type” or non-mutated forms of Escherichia coli (E-coli) bacteria that can quickly evolve and develop a resistance to antibiotics.
So the team wondered if a mutated strain of E-coli, called GASP, would have the same type of antibiotic resistance as the “wild type” strain if it were exposed to the same drug.
To find out, the researchers sequenced the genomes of both “wild type” and the mutated GASP strains of E-coli bacteria that had been exposed to ciprofloxacin, an antibiotic medication known commonly as Cipro. The sequencing experiments showed that although the strains of the E-coli used different methods of genetic mutation, they all were able to develop comparable levels of antibiotic resistance.
Austin said that the research his team conducted revealed the wide range of tools bacteria can use to overcome stress and develop antibiotic resistance.
He also wondered about the effectiveness of other commonly used methods for killing potentially harmful microbes, such as using alcohol to sanitize germ ridden surfaces, and if bacteria would be able to develop a resistance to them as well.
Austin and his team are planning further tests.
ESA’s Rosetta Probe Gets Close to Duck-Shaped Comet 67P/C-K
Back on Aug. 6 the European Space Agency‘s unmanned space probe Rosetta completed its decade long journey across space to meet up with its target, Comet 67P/Churyumov–Gerasimenko, making it the first spacecraft to rendezvous with a comet.
As the spacecraft neared its target, it took some close-up photos of the comet with its two camera Navigation Camera system (NAVCAM).
After examining the images, members of the Rosetta team at ESA couldn’t help but notice that Comet 67P/C-G appeared to be a very oddly shaped object. Its peculiar shape led them to nickname the comet the “rubber duck”.
As they continue to study Comet 67P/C-G, the scientists are looking to get a better understanding of its surface properties.
Mark McCaughrean, ESA’s Senior Science Advisor thinks that there should be a number of craters on the comet’s surface. If so, scientists would like to know how they were formed. Are they impact craters from being hit by various objects or could they be the result of residue left by materials that burst out from inside the comet?
Rosetta is now traveling in front of the comet at an average speed of about one meter per second said McCaughrean.
The spacecraft is now only about 50 kilometers away from Comet 67P/C-G, which is about 450,000,000 kilometers from the sun.
The Rosetta team is planning to place the spacecraft in orbit around the comet in a couple of weeks where it’ll stay for the remainder of its planned mission.
McCaughrean said that once Rosetta is in orbit it will do so at an average distance of about 30 kilometers.
The team is planning to occasionally lower the spacecraft’s orbit to about 10 kilometers above the comet’s surface or possibly even lower when the Rosetta’s attached Philae lander is deployed in November.
But before deciding to drop Rosetta to a lower altitude McCaughrean said that the team will need to consider the comet’s activity, such as how much gas and dust is flowing way from it.
Along with getting the spacecraft ready to orbit the comet, scientists have been quite busy trying to find an ideal landing spot for the Philae lander.
They have selected a number of possible landing sites and ESA is expected to announce the primary and back-up landing sites on September 15.
McCaughrean described the ideal landing site for Philae as one that would be about one square kilometer in size and able to provide enough sunlight to charge the probe’s battery.
Since the comet’s gravity is so low, the probe will most likely bounce when it first touches down, so ESA engineers have equipped it with two harpoons and some ice screws to keep the probe steady and attached to 67P/C-G’s surface.
While the Rosetta spacecraft is the mission’s most powerful machine and will be doing most of the work, the Philae lander, since it will actually be on the surface of the comet, will be able to do things that Rosetta can’t.
One of the first tasks assigned to Philae is to take a 360° panorama of its location.
It will use its onboard microscopes to get a closer look at the surface. Then it will drill about 25 centimeters into the comet to pull material up for analysis by Philae’s small laboratory so scientists can learn more about what makes up Comet 67P/C-G.
“We’re learning a huge amount (about the comet), but there’s still a huge amount to be learned in the next four years we sit next to this comet as it evolves,” said McCaughrean.
You can listen to the Science World radio interview with Mark McCaughrean either through the player below or check out the entire show at the times and places listed in the right side column.
3D Printer in Space, Antibiotic Laced Pesticides May Trigger Allergies, Milky Way a Member of the Laniakea Supercluster, Drink Responsibly Messages, Reducing E-Waste
NASA Hopes 3D Printer Technology Will Prove Useful in Space Voyages
NASA is taking its first step to see if it could someday create the first machine shop in outer space.
On its resupply mission that should launch sometime after September 19th, the SpaceX-4 will be delivering the first 3D printer to fly in space to the International Space Station.
The 3D printer is specially designed to operate in the micro-gravity environment of the space station.
The space agency is hoping that the 3D printer will operate properly and be able to create various items just as well in space as it does on the ground.
If the 3D printing experiment is successful, NASA says that the technology could someday help space travelers on missions into deep space produce critically needed tools or replacement parts.
Being able to create these items as they journey in space will allow mission crews to not only be more self-sufficient, but could also save space and lighten the weight of the spacecraft instead of having to store a supply of goods that may or may not be needed over the course of a mission.
Fruits and Vegetables Treated with Antibiotic Laced Pesticides Could Trigger Allergic Reaction in Some
Even if you don’t have any food allergies, scientists have found that danger just might be lurking in the fruits and vegetables you eat.
According to an article published in the September issue of the journal Annals of Allergy, Asthma and Immunology, if you’re allergic to antibiotics such as streptomycin, it could be possible to develop an allergic reaction due to a residue of antibiotics that remains in these foods.
Scientists studied a 10 year-old girl who suffered from a severe allergic reaction after eating blueberry pie despite it being free of any ingredients she is normally allergic to.
After some intensive testing of the young girl and a sample of the pie, the researchers were able to trace her allergic reaction to a streptomycin-tainted blueberry. It turns out that this antibiotic, which is often prescribed to treat various infections in humans, is also used as an ingredient in a pesticide that fights the growth of bacteria, fungi and algae in fruit.
Milky Way Found to be Part of the Laniakea Supercluster of Galaxies
Most of us already know that our solar system resides in the Milky Way galaxy. But did you know that our galaxy is part of a supercluster containing other galaxies?
Scientists have found that rather than being randomly strewn throughout the universe, galaxies tend to be grouped in these superclusters and linked together by a network of filaments.
The international team of astronomers who recently outlined the contours of this vast supercluster also came up with a name for this gathering of galaxies: “Laniakea”, which in Hawaiian means “immense heaven”.
Their findings are outlined in an article that appears in the September 4th edition of the journal Nature.
Study: Drink Responsibly Messages in Liquor Ads Promote Product Not Public Health
You may have seen advertisements on TV and in magazines for various liquor products, and, at least here in the United States, most of the ads contain reminder messages to consumers such as “drink responsibly” or “enjoy in moderation”.
But a new study from the Johns Hopkins Bloomberg School of Public Health, published in the September issue of the journal Drug and Alcohol indicates that these “reminder messages” do more to promote the alcoholic product rather than deliver fundamental public health information regarding the use or abuse of alcohol.
After analyzing a number of U.S. advertisements for various alcoholic beverages that appeared in U.S. magazines from 2008 to 2010, the researchers found that these advertiser messages also need to spell out what is considered to be responsible drinking and provide clear and specific warnings to the consumer about the risks that are linked to alcohol consumption.
The researchers also indicated that their analysis of the ads containing the “responsibility messages” revealed that 88 percent of the messages wound up reinforcing the promotion of the advertised product, with many of the messages actually contradicting the visual images that were displayed in the ads.
Stemming the Tide of E-Waste
An article published in the American Chemical Society journal Chemical and Engineering News, notes that people around the world purchase more than 1.8 billion new mobile phones per year, with many replacing older models that wind up as e-waste instead of being recycled or reused.
Precious metals such as gold and silver, which are used to manufacture cellphones that are sold this year alone are said to be worth more than $2.5 billion, according the article.
The author offered suggestions he felt would cut down on the amount of e-waste that’s rapidly accumulating throughout the world.
Among them is to make cell phones with easily replaceable modules that allow the user to replace the worn out or broken internal elements while being able keep the remainder of the phone intact.
Another suggests that the recycling process itself be upgraded to be more efficient and environmentally friendly, allowing for the recovery of a greater number of elements.
However, the article points out that consumers themselves are the key to cutting down the amount of e-waste. Instead of simply tossing aside their used electronic equipment people should consider and embrace the idea of recycling these products.