What is making this year’s predicted El Nino so hard to forecast?
Amnesty International's online tool to help validate videos showing human rights abuses
Why has the moon fascinated humans from every culture and for all time?
Crowdfunded space hackers have managed to restart an old comet-chasing NASA satellite
Adam Hart on how insect and cell structure research is helping develop swarming robots
The technology enabling a paralysed artist to draw using his brain waves
Why do we say sorry – and what do we really mean by it?
Explosion of stars produces cosmic dust that is thought to eventually form planets
How do general anaesthetics work in the body?
A report from New Interfaces for Musical Expression on the latest in electronic music