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Updated: 19 min 49 sec ago
Swine flu vaccine
How the humble egg plays a vital role in manufacture
Orbiting eyes
Next-generation space observatory gets ready
Government 'missing CO2 goal'
The UK government is not on course to meet its own targets for reducing carbon emissions, an advisory body warns.
Mexico shuts down to control flu
Mexico starts a five-day shutdown of parts of its economy in a bid to curb swine flu, as the virus reaches China.
Emerging picture
What the scientists know about the virus so far
Fertilisers 'reducing diversity'
Excess fertilisation reduces plant diversity, as fast growing species block some plants' access to sunlight, a study shows.
Africa's genetic secrets unlocked
A decade-long genetic study reveals Africa's huge diversity, linking culture, language and genes for the first time.
Lithium in water 'curbs suicide'
Drinking water which contains the element lithium may reduce the risk of suicide, a Japanese study suggests.
Hidden crisis
Undercover surgeons help Iraq's bomb victims
Experts unveil African gene study
Scientists unveil what they say is the most comprehensive study ever of African genes, after a decade of work.
Sizzling summer?
How much trust can we place in seasonal forecasts?
Video evidence of birds' remarkable talent for dancing
Some birds have a remarkable talent for dancing, two scientific studies suggest.
Spider sex violent but effective
Spiders in Israel have been spotted injecting their sperm through holes they make in females' abdomens.
Invisibility cloak edges closer
A tiny "carpet cloak" that makes objects invisible to optical light has been made by a US research team.
US reports first swine flu death
A Mexican child visiting the US dies of swine flu - the first such death outside Mexico, where the virus may have killed up to 159.
Debut for world's fastest camera
Scientists demonstrate an imaging system that each second can take millions of images just half a trillionth of a second long.
'Safe' climate means 'no to coal'
Keeping global temperatures within "safe" limits means leaving most fossil fuel reserves unburned, scientists say.
'Mother of all flu pandemics'
1918 was the 'mother of all pandemics'
'Barcode' shows mosquito threats
DNA "barcodes" to halt a disfiguring disease
Russia mulls rocket power 'first'
Russia's next-generation manned spaceship might use thrusters to perform a precision landing on its return to Earth.