Tree species diversity under pressure

In a new global study of more than 46,000 species of trees, an international team of researchers has shown that many tree species are under substantial pressure and poorly protected. The research team, headed by Aarhus University, ...

California won't immediately list Joshua tree as threatened

California won't be listing the iconic western Joshua tree as a threatened species for now after the four-member Fish and Game Commission couldn't reach agreement Thursday on how best to protect the plant from climate change.

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