marin headlands

In Conservation, What’s Old Becomes New Again

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It’s quite odd, when you stop and think about it, that landscapes shaped by millions of years of wind and rain and tectonic shifts, by countless millennia of vegetation growing and animals digging and dying, such that their boundaries follow the contours of nature, now find themselves shaped by people.

black walnut tree

Tree Detectives

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The Northern California black walnut led scientists into a genetic mystery: is this a rare tree, or a common one?