SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
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Lake Vostok drilling team. Portrait of the head of the Russian Antarctic Expedition (RAE), Valery Lukin (left) and head of the Lake Vostok drilling unit Nikolai Vasilyev (right), during a meeting with expedition members. Lake Vostok is the largest known subglacial lake in Antarctica and has a surface area of around 14,000 square kilometres. Ice cores have been taken to a depth of several kilometres by this expedition team. The cores cover hundreds of thousands of years of past climatic history due to air trapped in the ice. These studies allow reconstructions of past climate states of the Earth, aiding models of current climate change. Photographed at Pulkovo airport, Saint Petersburg, Russia, in 2012.
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