Isolated water voles in London are given miniature ladders to encourage them to venture further afield.

Cooling systems to spent fuel ponds at Japan's Fukushima nuclear plant have been partially restored after a power failure, operator Tepco says.

Planning permission is expected to be given later for French firm EDF Energy to build the first new nuclear power plant in the UK for generation.

A rock crushed under the Curiosity Mars rover's wheels has dazzled mission scientists with its brilliant white interior.