As billions of cicadas emerge from the ground across 16 states in the Southeast and Midwest, scientists are noticing a possible impact from climate change. Since the periodical cicadas that crawl out of the ground are triggered by soil temperature, and since temperatures are rising more quickly in the spring and early summer, the insects, once known for being notoriously predictable, are emerging more than two weeks earlier than usual. | CBS Mornings

CICADAS EMERGE: These swarms of Brood X cicadas have come out of hibernation in Maryland, emerging from the ground for the first time in 17 years across eastern U.S. https://cbsn.ws/2Scphvy | CBS News

Wait for it ... billions of Brood X cicada nymphs are emerging from the ground in 15 states — a natural phenomenon that only occurs every 17 years. After feeding off tree roots for nearly two decades, the nymphs crawl out of the soil and climb trees and other vertical structures in search of a suitable place to shed their shells. Molting takes several hours. After it has emerged from its carapace, the cicada must wait several more hours for its body and wings to harden. *** In this time-lapse fo