Sperm stem cells restore male fertility
A study in monkeys suggests that boys left infertile after chemotherapy may one day reproduce naturally after an injection of sperm stem cells
One-Minute Physics: Why we can't predict everything
Wondering who will win the election tomorrow? Watch an animation that shows why we can't make perfect predictions.
Time for the US to bury its not-very-smart grid
Electrical outage after outage follows the storms that strike the US north-east - a consensus is building for moving overhead power lines underground
Twenty-year-old drug 'best yet' for multiple sclerosis
A drug developed to treat leukaemia has outperformed current drugs for MS, reducing brain lesions by 50 per cent and halting accelerated brain shrinkage
Yosemite's long-lost twin could be resurrected
A San Francisco ballot could lead to Hetch Hetchy reservoir being drained and restored to a wilderness to match its iconic neighbour
The great thaw: Charting the end of the ice age
Just 20,000 years ago, ice ruled the planet. So why did it relax its grip? Finally, it looks like the answers are in
Shot from a Doctor Who camera
It's a still image that is more about time than space - this picture has not been manipulated or Photoshopped: it's simply a different way of looking at the world
Parcelling up nature in One Cubic Foot
Photographer David Liittschwager used a green cage measuring 1 cubic foot to introduce random sampling into his documentation of six fragile ecosystems
Fear of hackers holds back online voting in the US
The technology is ready for elections to be held online, but until cybersecurity is strengthened they are on hold
NASA rover adds new twist to Mars methane mystery
The first test for the gas from within the Martian atmosphere came up essentially empty, but Curiosity scientists say the hunt has just begun
Health alert: lethal after-effects of hurricanes
Sandy could keep harming people long after the floods subside
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