Bats that inhabited a hollow tree in a village in Guinea may have been the source of the world's biggest Ebola epidemic.
On December 11 2015, 195 states are scheduled to strike a deal in Paris to curb the fossil-fuel gases imperilling Earth's climate system.
The European Space Agency unveiled the spot on a comet in deep space where it will attempt a high-stakes landing.
‘The more data we collect, the less evidence we find to support the banality of evil idea,’ says a scientist.
Widespread use of sleeping pills by sleep-deprived astronauts could hamper vigilance in the high-risk environment, a study warned.
Scientists are preparing for a historic rendezvous between a comet and a space probe after a 10-year chase.
Psychologists have unveiled the results of an unusual set of experiments into so-called neural signals.
A path that seemed to lead to the glittering goal of a cure for HIV now seems to point to a dead end.
A prototype vaccine for dengue that two years ago yielded lukewarm results has proved more effective after wider trials, say researchers.
Tibetans are able to live at high altitude thanks to a special gene they inherited.
How human advancement enabled a tiny freshwater worm to become a curse for millions.
Astronomers say they may have found the answer to a cosmic riddle called the magnetar.
In a world first, scientists announce they added two letters to the genetic code that forms the blueprint for life.
Cold and dry today, Mars was previously warm and wet but possibly only at intervals, a study suggests.
The space rock that smashed into Earth 65 million years ago unleashed acid rain that turned oceans into a witches' brew, researchers say.
Astronomers say they’ve found a star 13. 6 billion years old, making it the most ancient star ever seen.
Scientists reported a simple way to turn animal cells back to a youthful, neutral state.
About one person in 2 000 in Britain carries the protein linked to the human version of mad cow disease, a study said.
Scientists are putting the final touches on the first volume of a report that will give the world the most detailed picture yet of climate change.
Rice tainted with high levels of arsenic has been linked to genetic damage that heightens the risk of cancer, a study said.
Ten years later and after more than 12 000 swings around the Red Planet, Europe's Mars Express is still going strong.
Reduced to dust by eight centuries, the heart of the legendary warrior was analysed by modern lab technology.
The exploit opens up the prospect of linking brains among animals to create an “organic computer,” said neurobiologist Miguel Nicolelis.
Astronomers are gearing for thrills this year when Earth gets buzzed by two rogue asteroids and two comets.
Venus is a hell that would have surpassed even the imagination of Dante, and has caused more grief and disappointment than any other planet in the Solar System. ...