A bird flies over a tree laden with snow in the town of Alexandria, northern Greece, Tuesday, Feb. 7, 2012. Europeans across the continent have been battling more than a week of extreme weather, with thousands still trapped by snow in remote mountain villages and some hundreds dead after temperatures hit as low as minus 33 Fahrenheit (minus 36 Celsius); and European authorities now facing the prospect of flooding caused by melting snow. (AP Photo/Nikolas Giakoumidis)