Science and technology

Associated Press
Russian cosmonauts Oleg Novitsky, left, and Yevgeny Tarelkin, second left, are greeted with flowers upon arrival at an airport in Kostanai, Kazakhstan, Saturday, March 16, 2013, after they return to the earth with NASA's astronaut Kevin Ford, not in the photo, in a Soyuz space capsule. The Soyuz space capsule carrying the three men landed Saturday morning on the steppes of Kazakhstan after 144 days aboard the International Space Station, ISS. (AP Photo/Alexander Nemenov, Pool)

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