Tropical Storm Erika batters DominicaStorm damage is seen near a bridge in Roseau, Dominica

Tropical Storm Erika has hit the Caribbean island of Dominica, with the devastation setting it back 20 years, its prime minister says.

Nasa team 'living on Mars' for a year

A team of Nasa recruits begins living near an extinct volcano in Hawaii to mimic what life would be like on Mars.

Iceland's spectacular Northern Lights Watch

Footage of the Aurora Borealis, or Northern Lights, filmed over Iceland on Thursday.

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