A young boy watches from a window of a stalled train as he waits for service to resume following a power outage in New Delhi.  India’s energy crisis cascaded over half the country Tuesday when three of its regional grids collapsed, leaving 620 million people without electricity. (AP)

Chen Ruolin and Wang Hao of China compete during the women’s synchronized 10-meter platform diving final at the Summer Olympics in London. China won the gold medal in the event. (AP)

Policemen take part in a riot prevention drill during a visit by delegations from Vietnam’s Police Force Building Department at the Metropolitan Police Bureau in Bangkok, Thailand. (Reuters)

A woman relaxes in a roofed wicker chair on the beach in the German Baltic Sea resort of Sellin on the island of Ruegen. Hot weather conditions reached a peak of 32 degrees Celsius in northeast Germany Tuesday. (Reuters)

A participant shouts as he is detained by police during a protest to defend Article 31 of the Russian constitution in St. Petersburg. Activists gather on the 31st day of the month to support Article 31 – the right to free assembly. (Reuters)

Fans, dressed in U.S. flag bodysuits, cheer at the Aquatics Center during the men’s 4x200m freestyle relay swimming heats at the London 2012 Olympic Games. (Reuters)

A customer gets a haircut from a barber holding a candle at a barber shop in Kolkata, India.  Over 600 million people were without electricity for several hours across the country Tuesday in, by far, the world’s biggest blackout.  (AP)

A security officer walks past artwork at the Tokyo Big Sight convention center in Tokyo, Japan. (AP)

Filipino performer Alvin Lopez performs palm spinning during a contact juggling workshop in Manila’s Makati financial district. Contact juggling is a type of object manipulation, in which the artist focuses on the ball’s interaction with the body, rather than it being thrown in the air. (Reuters)

A cloud passes over the Oriental Pearl TV Tower in the Pudong financial district, Shanghai, China. (Reuters)