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Microbes help purify the precious metal

Listen to a roundup of some of our favorite stories from this week

Nasa is aiming to get closer to the Sun than ever before, with plans to plunge a car-sized unmanned spacecraft into the star's outer atmosphere.

Nasa is aiming to get closer to the Sun than ever before, with plans to plunge a car-sized unmanned spacecraft into the star's outer atmosphere.

New-born twin giant pandas made their first public appearance at a zoo in Japan on Friday in Shirahama.

New-born twin giant pandas made their first public appearance at a zoo in Japan on Friday in Shirahama.

The re-introduction of wolves to a US National Park has not helped re-establish quaking aspens, as many researchers had hoped.

The re-introduction of wolves to a US National Park has not helped re-establish quaking aspens, as many researchers had hoped.

Rory Cellan-Jones tries out 3D video equipment and looks at the latest ultra thin and bright OLED TVs.

Rory Cellan-Jones tries out 3D video equipment and looks at the latest ultra thin and bright OLED TVs.

Rory Cellan-Jones tries out 3D video equipment and looks at the latest ultra thin and bright OLED TVs.

Sony has won a permanent ban in Australia of a hack for its PS3, but the code behind it has been released for free on the web.

Ian Hardy discovers how top researchers and companies are using today's devices and data to make the world a more interesting place

Ian Hardy discovers how top researchers and companies are using today's devices and data to make the world a more interesting place

How the tech savvy help victims cope in a crisis via the web

Researchers begin a three-year study to uncover the secrets of St Kilda's super-sized field mice.

Samsung's Galaxy Tab and Toshiba's Folio 100 are amongst the gadgets showcased at the world's largest consumer electronics fair in Berlin.

Samsung's Galaxy Tab and Toshiba's Folio 100 are amongst the gadgets showcased at the world's largest consumer electronics fair in Berlin.

BP says the cost of its Gulf of Mexico oil spill has risen to $8bn - a rise of more than $2bn in the last month alone.

Hundreds of sharks have been spotted off the Queensland coast.