TECH
Touchscreen Lego Piling special blocks onto a new touchscreen “table” offers a whole new way to interact with the virtual world. Watch how it works in our video
ONLINE WARFARE
Gamers more aggressive to strangers Levels of testosterone in computer gamers surged when they were competing against strangers, but not friends – as you’d expect in real warfare
ASTRONOMY
Reclaim the night sky Iranian photographer Babak Tafreshi has won the 2009 Lennart Nilsson scientific photography prize – see his stunning images of the sky in our gallery
ASTEROIDS
The world’s best impact craters About 150 such craters are known on…
