The Cassini mission completes a flyby of Saturn's moon Enceladus, sending back data and stunning images of the rippling terrain.
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Children should be allowed to get dirty, according to scientists who say being too clean can impair the skin's ability to heal.
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Grandmother macaques care for their abandoned grandchildren, behaviour not recorded before in non-human primates.
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Hopes are boosted for success at the Copenhagen climate summit as it emerges more than 60 heads of state are expected to attend.
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The massive and apparently stable East Antarctic ice sheet is losing mass, a new study suggests.
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The USSR's first civilian cosmonaut, Konstantin Feoktistov, a crew member of the 1964 Voskhod spaceship, dies.
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Researchers working on the Large Hadron Collider are delighted with the progress made since the machine restarted.
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A European satellite launched to study the Earth's water cycle returns its first data, confirming its novel instrument is working well.
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Fish reared in water acidified by CO2 may become "fatally attracted" to the smell of their predators, say scientists.
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The Large Hadron Collider experiment, designed to shed light on the cosmos, restarts after 14 months of repairs.
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The e-mail system of one of the world's leading climate research units has been breached by hackers.
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Two of the longest-serving instruments from the Hubble telescope have taken up residence in a museum in the US.
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French researchers say they have found a way of using human embryonic stem cells to create new skin which could help serious burns victims.
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A study of mammoth dung has helped unravel the mystery of what caused the great mammals to die out.
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The Large Hadron Collider (LHC) could be re-started in the early hours of Saturday morning at the earliest, officials have said.
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Two astronauts from the space shuttle Atlantis have embarked on the first spacewalk of their mission.
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The prototype of a solar-powered plane destined for a record attempt is set to make its first trip across a runway.
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Energy-efficient light bulbs lose on average more than a fifth of their brightness over their lifetime, a study finds.
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Scientists show off an effect not unlike that of "phasers" in Star Trek - but it only works on tiny worms called nematodes.
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Drinking alcohol every day cuts the risk of coronary heart disease in men sharply, a study suggests, but experts remain critical.
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