The latest on the search for another planet like our own Earth; Stealing a trick from nature to make hydrogen - a clean fuel; Elephants tottering around on tiptoes
In this week's programme we look at the latest earth like exoplanets, are they cool enough to support life?
Also, creating the fuel of the future using lessons from nature - a way to make hydrogen directly from sunlight.
We examine the conditions under which aquatic mammals, in particular whales, might get decompression sickness, a condition found in human divers.
We hear how the evolution of elephant's foot bones means they tip toe around, as if they are wearing high heels.
- Thu 22 Dec 2011 19:32GMT
- Fri 23 Dec 2011 04:32GMT
- Fri 23 Dec 2011 12:32GMT
- Christmas Eve 2011 06:32GMT
- Christmas Eve 2011 14:32GMT
- Boxing Day 2011 00:32GMT