Health Oxygen drop makes people with spine injury more mobile Lower levels of oxygen, like those found at high altitudes, could help mobility Ask any mountaineer or miner and they'll tell you that time in a low-oxygen environment can be a dangerous business – it can cause altitude sickness and other health problems. But for people with spinal injuries, short periods of hypoxia may be … 51¶¯Âþ
Life Modern moral responses need a manual mode "When there is a conflict, which group's sense of right and wrong should prevail?" Our instincts don't always serve us well. Moral psychologist Joshua Greene tells Tiffany O'Callaghan why, in the modern world, we need to figure out when to put our sense of right and wrong in manual mode You say morality is more … Opinion
Technology How heat from trains and sewers can warm our homes Europe wastes more heat than it uses to keep buildings warm. Now projects across the continent will tap everything from subways to sewers to keep homes cosy 51¶¯Âþ
Earth Freak Canadian storm has nothing on Martian weather (Image: Robert Edmonds) THIS scene could almost be enough to make an atheist think divine punishment was at hand. Check out the horizontal roll vortex in the right of the image. That is a rare sight indeed. If you are an atmospheric scientist, or a storm chaser, you will love those vortex dynamics. For the … Regulars
Earth Climate slowdown: The world won't stop warming The rate of global warming has slowed – but why? Does it mean we can stop worrying about global warming? Here's the lowdown on the slowdown Features
Technology Top-down or bottom-up? Two visions of smart cities City sense (Image: Michael Christopher Brown/Magnum Photos) Two books explore what interactive technology can do for cities of the future – the results range from authoritarian to ideal, open-sourced democracies THERE are currently two equally powerful, but ideologically opposed, visions of what a smart city is and what it should be. In the blue corner … CultureLab
Enigma Number 1778 Around the houses Fewer than 100 houses have been built on the edge of a circular green, equally-spaced around the whole perimeter and numbered 1, 2, ... in order. I have counted the number of pairs of houses with their first and second digits exchanged that are either 90 degrees or 180 degrees apart around … Regulars
Feedback: Dinosaurs against climate change Feedback is our weekly column of bizarre stories, implausible advertising claims, confusing instructions and more Dinosaurs vs climate change WARNING: the radio advert to which Barry Cash alerts us is presented at tinyurl.com/dino-ad with an apology – listening to it "probably decreased your IQ by a couple of points". It's by Ken Ham, founder of … Regulars