Planting trees is a popular solution to carbon emissions. But where will all those seedlings come from?
Dean Swift has gotten really good at spotting where squirrels hide their seeds. In the forests of Colorado, Arizona, New Mexico, and South Dakota, he looks for a moist shaded area with a small grove of trees, sometimes near a ravine. Here, he will find a cache of chewed cones a few meters deep. On his hands and knees, he will dig through the mound searching for where the squirrels have hid full cones for the coming winter—the jackpot.
Swift is a seed collector. He takes the best cones and seeds he can
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