Related topics: forest

Northern China chokes under severe pollution

Tens of millions of people across northern China were under severe pollution warnings Tuesday, with authorities urging them to reduce outdoor activities as a grayish smog enveloped the region.

Fires in the Sierra Nevada likely to grow in frequency

Naturalist John Muir called the Sierra Nevada "the Range of Light." But a more ominous nickname, "the Range of Fire," may lie ahead, according to new research from the University of California, Irvine. By 2040, as humans ...

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