Cisco chief writes to Obama to decry NSA activities

Cisco chief executive John Chambers has complained to US President Barack Obama about the National Security Agency's spying practices, saying they were harming overseas business for US tech firms.

Anthropologist who identified mass graves dies

Clyde Snow, a forensic anthropologist who worked on cases ranging from the assassination of President John F. Kennedy to mass graves in Argentina, has died. He was 86.

Berlin start-up pioneers fish-farm veggie garden

The ancient Aztecs and Chinese did it millenia ago, and now a Berlin start-up hopes it will feed 21st-century city dwellers using aquaponics, a combination of rearing fish and growing vegetables.

How does snow affect the amount of water in rivers?

New research has shown for the first time that the amount of water flowing through rivers in snow-affected regions depends significantly on how much of the precipitation falls as snowfall. This means in a warming climate, ...

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