Archive for December, 2009

DNA analysed from early European

Thursday, December 31st, 2009

By Paul RinconScience reporter, BBC News

Scientists have analysed DNA extracted from the remains of a 30,000-year-old European hunter-gatherer.
Studying the DNA of long-dead humans can open up a window into the evolution of our species (Homo sapiens).
But previous studies of this kind have been hampered by scientists’ inability to distinguish between the ancient human DNA [...]

Devil cancer source ‘identified’

Thursday, December 31st, 2009

By Mark KinverScience and environment reporter, BBC News

Researchers believe they have identified the source of fatal tumours that threaten to wipe out the wild population of Tasmanian devils.
Writing in Science, an international team of scientists suggest cells that protect nerves are the likely origin of devil facial tumour disease (DFTD).
The disease is a transmissible [...]

‘Lifeless’ prions can ‘evolve’

Thursday, December 31st, 2009

Scientists have shown for the first time that "lifeless" prion proteins, devoid of all genetic material, can evolve just like higher forms of life.
The Scripps Research Institute in the US says the prions can change to suit their environment and go on to develop drug resistance.
Prions are associated with 20 different brain diseases in [...]

Russia plans to divert asteroid that will pass near Earth in 2030s

Thursday, December 31st, 2009

The head of Russia’s federal space agency has said it will work to divert an asteroid which passes near the Earth in the 2030s.
Anatoly Perminov told the Voice of Russia radio service that the agency’s science council would hold a closed meeting to discuss the issue.
Any eventual plan is likely to be an international [...]

2010 starts with good news for Tasmanian devils

Thursday, December 31st, 2009

Scientists fighting a cancer that threatens to wipe out Australia’s Tasmanian devils say they have made a breakthrough.
A contagious facial tumour has cut the number of the animals by more than half in 10 years.
But researchers say they have now identified the cell type that prompts the cancer and are developing a test to [...]