Olivia Paterson reports on the development of a space harpoon to get rid of orbiting space junk.
More top news
A little girl has been reunited with her missing toy bunny just in time for Christmas with the help of a month-long Twitter campaign.
Elodie Harper blogs about meeting the teachers who choose to work with the most challenging children - and what motivates them.
Largely cloudy tonight and tomorrow with some dampness at times but staying mild for December.