Northern extremes. Camouflage is a key survival strategy for many animals. But what do you do if your habitat changes dramatically with the seasons? From high mountain habitats to the Arctic north, animals have developed a seasonal wardrobe to stay under cover — and stay alive.
Millions of Brazilian free-tailed bats spend summers in the Bracken Cave near San Antonio, Texas. A study finds they're arriving earlier and staying longer as the planet warms. Credit: Ann Froschauer/USFWS
Global sea level rise is accelerating incrementally over time rather than increasing at a steady rate, as previously thought, according to a new study based on 25 years of NASA and European satellite data. Credit: NASA's Goddard Space Flight Center/Kathryn Mersmann
Our evolution has been an awesome journey of fourteen billion years. Every entity that ever moved or swam or crawled or flew, every being that lived to reproduce itself, all the vast numbers of species now extinct and presently living who have invented the amazing capability which we have inherited as our eyes, our ears, our organs, our very atoms, molecules and cells—all of those preceding us are represented in our emergence now. We bow down in awe and gratitude for the past. Without all that came before us, none of us would be awakening now!