Dr von Schneidemesser was speaking here at the American Geophysical Union (AGU) Fall Meeting, the world's largest annual gathering of Earth scientists.

BBC: London's clue to stubborn ozone levels

Prof Goldstein has been presenting the results of the drilling work here at the 2011 American Geophysical Union (AGU) Fall Meeting, the largest annual gathering of Earth scientists.

BBC: Cores reveal when Dead Sea 'died'

The announcement of a follow-up robot was made here at the American Geophysical Union (AGU) Fall Meeting, the world's largest annual gathering for Earth and planetary scientists, and a major showcase for Nasa-led research.

BBC: Nasa to send new rover to Mars in 2020