Kenya, Tanzania brace for cyclone as heavy rains persist

Kenya and Tanzania were bracing Thursday for a cyclone on the heels of torrential rains that have devastated East Africa, killing more than 350 people and forcing tens of thousands from their homes.

Supercomputers shine new light on ocean turbulence

As an ocean wave laps up against a beach, it contains innumerable swirls and eddies. The seawater forms complex patterns at each level, from the waves that surfers catch to ripples too small and fast for the human eye to ...

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