Twitter reveals the happiest spots in New York
An analysis of tweets shows which areas of New York City were happiest and saddest during a two week period
Wiped out: The race to save our video heritage
The taped memories of half a century are failing, and the machines to play them are too. We must act now or lose a huge chunk of 20th-century history
Syria: Drop medicines, not bombs
The most effective response to the nerve gas attacks in Damascus would be to arm the people with antidotes and information
ButtonMasher: DIY video game tools put you in control
No programming experience? No problem. A host of new tools let anyone create their own video game
Iraq offers grim lessons for Syrian gas survivors
The aftermath of 1980s chemical attacks in Iraq suggest that thousands of Syrians face decades of sickness – but intervention can still help some
Wind and rockets key clues in Syrian chemical puzzle
From wind direction to short-range rockets, analysis of the Damascus chemical attack can reveal the poison used, identify suspects and suggest what to do next
Red sprites snapped dancing above a Nebraska storm
Rare pictures taken from a research plane show the lightning-like tendrils reaching up into the sky, offering a chance to explore what sparks a sprite
Yosemite Rim Fire is taste of things to come
The huge wildfire burning 250 kilometres east of San Francisco threatens its power and water supplies, and is a sobering warning of changes that lie ahead
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