US accuses North Korea of Sony hack (Update)

The United States said Friday that North Korea was behind a cyber attack on Sony Pictures, warning that those responsible would face punishment, as an envoy for Pyongyang again denied involvement.

Dec 19, 2014
5 / 5 (1) 1

Trade winds ventilate the tropical oceans

Long-term observations indicate that the oxygen minimum zones in the tropical oceans have expanded in recent decades. The reason is still unknown. Now scientists at the GEOMAR Helmholtz Centre for Ocean Research ...

Dec 19, 2014
5 / 5 (2) 0