Costa Rica to ration electricity as drought bites

Costa Rica has become the latest Latin American country to introduce rationing due to drought, announcing Thursday it will limit access to electricity for which it relies heavily on hydro-generation.

Research holds promise for liver regeneration

A new study titled "Biomimetic hepatic lobules from three-dimensional imprinted cell sheets" has been led by Prof. Yuanjin Zhao of the Department of Hepatobiliary Surgery, Hepatobiliary Institute, Nanjing Drum Tower Hospital, ...

Exploring the asteroid Apophis with small satellites

The author of a disaster novel couldn't have dreamed it up any better: On a Friday, the thirteenth of all days, the potentially dangerous asteroid (99942) Apophis will come extremely close to humanity.

What's with the recent wild tornadoes? Expert weighs in

In the past week, weather authorities across the U.S. reported more than 100 tornadoes across the central and southern parts of the country, destroying dozens of homes and buildings from Oklahoma to Nebraska and Iowa.

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