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 an ecosystem and ...

Oil palms and conservation -- do they mix?

Conservation science can help protect the variety of living things in tropical landscapes even if they are being turned into oil palm plantations, new research argues.

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