The BBC brings you all the week's science news.
All available episodes
Upcoming episodes (2 new and 7 repeats)
Gravity and ripples in the fabric of space time - what do these mean for us?
An amateur astronomer has discovered a comet probably from outside our Solar System
Geologist Minik Rosing describes how mud from Greenland might fertilise tropical farms
An astronomer thinks we could see coral-like bioflourescence around distant planets.
Could this world 31 light years away be suitable for life?
Sign in to the BBC, or Register