21/04/2016

Plant signals travel different routes to turn on defense

Faced with a pathogen, important signaling chemicals within plant cells travel different routes to inform the plant to turn on its defense mechanisms, according to a recent University of Kentucky study.

Looking back: 30 years of photographing Chernobyl

Efrem Lukatsky, a Kiev-based photographer for The Associated Press, recalls the confusion and anxiety of the 1986 Chernobyl nuclear power plant explosion, the world's worst nuclear accident.

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