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Vikings grew barley in Greenland

A sensational find at the bottom of an ancient rubbish heap in Greenland suggests that Vikings grew barley on the island 1,000 years ago.

Redheads feel a different kind of pain

Redheads are more sensitive to some kinds of pain and less sensitive to others. The explanation for these differences could be found in their genetic makeup.

Chimpanzees have the X factor

New research reveals how natural selection has affected the evolution of chimpanzees, and perhaps also humans. The X chromosome probably holds the answer.

Everyday chemicals impair effects of vaccines

High concentrations of so-called PFCs in children’s blood reduce the effect of vaccines, a new Faroese/Danish study shows.

The mother of all birds had black wings

A study has discovered new evidence about the colour of the wings of Archaeopteryx – the primordial bird.

A single glass of wine can harm your foetus

The risk of miscarriage increases significantly if just two units of alcohol are consumed per week during pregnancy.

Stopping treatment with blood-thinning drug can be fatal

Patients being treated with the blood-thinning medicine warfarin should be wary of breaking off their treatment as they then run a considerable risk of developing blood clots in the brain.

Cerebral malaria risk is gene-linked

Europeans are three times more likely to develop cerebral malaria than Africans. The difference appears to be caused by a gene which has mutated in Africans but not in Europeans.

Girls use violence to gain respect

A pioneering study shows that some girls feel they gain respect by behaving aggressively and using violence.

The North Pole is on thin ice

While the world’s political leaders have left the negotiating table again without an agreement to reduce greenhouse gases, the Arctic has greater problems than ever – 75 percent of the sea ice has disappeared.