SPACE
Satellite crash prediction Iridium and Cosmos satellites created an 鈥渦nprecedented鈥� debris field when they collided last week. We examine how the crash occurred, and how it could have been avoided. Plus: watch an animation of the spread of the debris.
ENVIRONMENT
Ocean survey reveals hundreds of 鈥榖ipolar鈥� species Of the thousands of species that populate Antarctica and the Arctic, it seems hundreds are found at both poles, despite the 11,000-kilometre gap between polar regions. How did they cross it?
TECH
Gadget guesses what you want from your grip Grab this new hand-held device like it鈥檚 a phone, and that鈥檚 what it becomes, but hold it like a camera and its ready to take snapshots. The gadget monitors the way it is held to predict what you are going to use it for. Watch a video demonstration.
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INNOVATION
Robotic faces鈥� for humans Artificial muscles beneath the skin could make it possible for people with paralysis to regain full control of their eye blinks and facial expressions. The technique could one day reanimate paralysed hands, a new patent application claims.
SPACE
First gravity map of Moon鈥檚 far side unveiled The map shows that dark-side craters are different to those on the near side. The results could reveal more about the Moon as it was billions of years ago, when magma flowed across its surface.
BLOG
Live from the 鈥極lympics of science conferences鈥� Read our blogs from the American Association for the Advancement of Science meeting in Chicago: from how computers are mastering a game with 10171 outcomes, to speculation on why human females don鈥檛 have puny brains.