News tagged with global change

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Earthworm invasion

Beavers reshape landscapes with their dams. Wolves control elk populations. Sea otters protect kelp forests by eating sea urchins. These are what ecologists call "keystone" species: critters that control ...

Sep 12, 2013 not rated yet 1

Climate change may speed up forests' life cycles

Many climate studies have predicted that tree species will respond to global warming by migrating via seed dispersal to cooler climates. But a new study of 65 different species in 31 eastern states finds evidence of a different, ...

Sep 11, 2013 2.3 / 5 (3) 1

How pesticides change the environment

The number of humans on the planet has almost doubled in the past 50 years ‒ and so has global food production. As a result, the use of pesticides and their effect on humans, animals and plants have become ...

Aug 16, 2013 5 / 5 (4) 0