But when the question of how to explore the lake came up, not long after its discovery, the Vostok scientists faced a serious dilemma. The lake is under immense pressure, and to breach the ice would have devastating consequences.
Roger Federer: Swiss star will play on until at least 2019. Updated 1815 GMT (0215 HKT) February 21, 2017. Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.
Miroslava Mirka Federer (born Miroslava VavrincovÃ¡ on 1 April 1978, later Miroslava Vavrinec) is a Slovak-born Swiss former professional tennis player. She reached her career-high WTA singles ranking of World No. 76 on 10 September 2001 and a doubles ranking of World No. 215 on 24 August 1998. She is the wife of professional tennis player Roger Federer, having first met him at the 2000 Summer Olympics. She retired from the game in 2002 due to a persistent foot injury.