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Captured on film: How plants learn of danger from other plants

… by releasing a gas. (Vid.)

For the first time, scientists at Exeter University have captured on film the process by which plants alert each other to possible dangers. – BBC News, 7 February 2012

It’s been known for some years that plants do this, but capturing it on film is quite a coup.

Note: Film trailers precede the plant demo.

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