Cyber-wars 1: What’s the worst that could happen?
Report: Wildlife face 'Armageddon' as forests shrink
Bruce Willis won't save us if asteroid threatens
How we’ve learned to love the end of the world
USAF wants mind-reading drones
Betelgeuse exploding next year? Don't bet on it
NASA lists most ludicrous sci-fi movies
Iran has robots: this means war