Space agencies aim to deliver rocks from Mars to Earth
Nasa and Esa sign a letter of intent that could lead to the first "round trip" to the Red Planet.
Author Archives: BBC News - Science & Environment
‘Guns, germs and trees’ determine gorilla’s fate
The largest ever survey of western lowland gorillas shows most are living in unprotected areas.
Seventh EU Sentinel goes into orbit
Europe's latest Earth observation satellite will focus on the behaviour and health of oceans.