“It’s simply too much money. It’s time for him to go – the sooner he gets a new home the better.”

Heiner Kloes, senior bear keeper at Berlin Zoo, explains that the zoo is trying to sell celebrity polar bear Knut as it cannot afford a new compound that would be large enough for him to mate in (The Times).

“We thought that when it had escaped out to the world it would have a more dignified name. But it didn’t.”

Doug Engelbart, of the Stanford Research Institute in California, invented the computer mouse 40 years ago (Daily Telegraph).

“We drilled and drilled all winter when it was dark and the windchill was 80 below. Everyone thought I was crazy.”

Chuck Fipke explains how, in Wired’s words, ‘a Rogue Geologist Discovered a Diamond Trove in the Canadian Arctic’.