Species are on the move—and we're feeling It

[Claire.]

Half of All Species Are on the Move—And We're Feeling It

The shrubs probably responded first. In the 19th century, alder and flowering willows in the Alaskan Arctic stood no taller than a small child—just a little over three feet. But as temperatures warmed with fossil fuel emissions, and growing seasons lengthened, the shrubs multiplied and prospered. Today many stand over six feet.

Read more: National Geographic