As the planet warms, many tree species in the eastern US are migrating.
Pines and spruce are heading north, while oaks and maples are heading west of their historical ranges, according to a recent study. In all, the newly published research confirms, 86 tree species in the eastern US are moving into new areas.
Trees don't just pick up and move, of course. Their seeds tend to spread in one direction or another, depending on local conditions, and saplings will have more success in places best suited to their natural traits.