California's trees are dying, and might not be coming back

The State of California is banking on its forests to help reduce planet-warming carbon dioxide in the atmosphere. But that element of the state's climate-change solution arsenal may be in jeopardy, as new research from the ...

New method of estimating biodiversity based on tree cover

Historically, conservationists have protected species by placing large swaths of land into preserves and parks. However, only 13 percent of the world's land area is located in protected natural land. Most of the planet's ...

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