Bears at risk due to mining, poaching: wildlife group

The populations of four vulnerable bear species have fallen by at least 30 percent in the last 30 years due to rampant deforestation, mining and poaching, a conservation group said on Monday.

Oak trees have a lot of gall

Those valley oak trees (Quercus lobata) in California's Central Valley have a lot of gall.

Wasps wage war on behalf of wiliwili trees

A black, two-millimeter-long wasp from East Africa is helping wage war on one of its own kind—the Erythrina gall wasp, an invasive species that's decimated Hawaii's endemic wiliwili (Erythrina sandwicensis) and introduced ...

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