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40,083 articles from Guardian Unlimited Science

Confronting the sceptics

Post your comments about the programme below.Join our Facebook group. Listen back through our archive.Follow us on our Twitter feed and receive updates on all breaking science news stories from Guardian Science.Subscribe free via iTunes to ensure every episode gets delivered. (Here is the non-iTunes URL feed).James RandersonAndy Duckworth...


MONDAY 31. AUGUST 2009



SUNDAY 30. AUGUST 2009



FRIDAY 28. AUGUST 2009


Giant piranha found in Devon river

Environment Agency workers shocked to find ferocious fish – believed to have been a pet – floating in river TorridgeA giant piranha – the most ferocious freshwater fish in the world – has been found in a Devon river, the Environment Agency said today.Bathers in the UK's rivers and streams should be reassured that the fish was dead and is thought to have been an abandoned pet. Its discovery...

Semenya's testosterone levels 'normal'

• Testosterone levels within range for woman • Test was taken three years ago, say sourcesCaster Semenya's testosterone levels were found to be within the range that allows her to participate in women's races, despite being higher than usual, according to a press report in South Africa.After the fallout and speculation following her spectacular win at Berlin in the 800m World Championship...

Digging up Britain

We visit sites from windswept Orkney to the wilds of Dartmoor, turning up Roman treasures, bronze-age homes and a tiny figurine that hasn't been seen for 5,000 years...


THURSDAY 27. AUGUST 2009


No joke: Scientists call for stricter controls on emissions of laughing gas

Nitrous oxide could soon pose a bigger threat to ozone than CFC chemicals, says atmospheric chemistScientists have called for stricter controls on emissions of laughing gas, after discovering the common chemical poses a new threat to the recovering ozone layer. The gas, properly known as nitrous oxide, could soon pose a bigger threat to ozone than CFC chemicals, the use of which has been...


WEDNESDAY 26. AUGUST 2009


Weightloss pill may damage liver

A slimming drug available over the counter in the UK is being investigated for links to 32 cases of liver damage by the US Food and Drug Administration.The FDA began investigating orlistat, sold over the counter as Alli, and its potential links to liver damage earlier this year after concerns were raised about potentially harmful side effects. On Monday, the agency said it was assessing 32 reports...

Marine life: Illuminating the ocean

Twelve thousand feet below the ocean surface, biologists have discovered an entirely new family of sea creatures. Swima bombiviridis, the first to be named in the latest issue of Science, is a small swimming worm that can discard bits of its own tissue in a brilliant green, bioluminescent display. Six more species await description, and five have been equipped by evolution with detachable firework...


TUESDAY 25. AUGUST 2009