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Russia will target European cities in response to US missile defence plans, says Vladimir Putin

Friendship among teenagers is down: the number who say they have a best friend has fallen by 5 per cent in 20 years

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Climate change will threaten up to 900 bird species by 2050

Mudslide buries Russia's most famous natural wonder, a valley of spewing geysers in Kamchatka

Channel 4 will air pictures of Diana crash despite the princes' plea

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£400,000 Olympics logo receives mixed reviews

Happiness lies in accepting life's misery, a report from California University helpfully points out

Ministers think introducing a national "British Day" will encourage civic values

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Experts say ice blocks under seats on the underground will cool commuters

Scientists are a step closer to curing impotence with gene therapy

Huge Elizabethan tapestry is found intact a century after going missing

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Summary: Unseasonal chill from Russia sweeps Europe. Could last some time

Forecast: Plenty more hot air from Labour Party hopefuls as hustings continue