The two-foot tall imperial woodpecker went extinct in the late 20th century, but a recently re-discovered video shows what the planet has lost.
Insects are scared to death of fish
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The mere presence of a predator causes enough stress to kill a dragonfly, even when the predator cannot actually get at its prey to eat it, say biologists. The scientists suggest that their findings could apply to all organisms facing any amount of stress, and that the experiment could be used as a model for future studies on the lethal effects of stress.
