From 22-24 October on BBC Two, Prof Alice Roberts and Dr George McGavin present Prehistoric Autopsy, a close look at three of our ancient ancestors. Here, palaeoanthropologist and series consultant Isabelle De Groote introduces those three hominins.
On 8 October 2012, daredevil Felix Baumgartner will attempt to break the record for the highest skydive. Ian Taylor looks at how his death-defying freefall – the Red Bull Stratos mission – could be critical for the future of human spaceflight.
Shale gas could solve the fuel crisis. But in parts of Europe and America it's been banned over safety fears, and it was blamed in 2011 for a couple minor earthquakes in the UK. Robert Matthews investigates.