Nearly a fifth of Earth's surface transformed since 1960

Whether it's turning forests into cropland or savannah into pastures, humanity has repurposed land over the last 60 years equivalent in area to Africa and Europe combined, researchers said Tuesday.

Climate impacts drive east-west divide in forest seed production

Younger, smaller trees that comprise much of North America's eastern forests have increased their seed production under climate change, but older, larger trees that dominate forests in much of the West have been less responsive, ...

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