Science Weekly podcast: Dark Matter, John Gribbin, a carrot mob, Nasa's Martian probe and Darwin's..
Written by Alok Jha, James Randerson, Ian Sample, Nell Boase
11/16/2008
This week's guest is astronomer and prolific author John Gribbin. We discuss dark matter and why the moon is so important. Plus, why the Earth, the universe and everything is rather pretty average really.