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
A rationally compelling environmental ethics is dependent on religion. Ironically, the only way to resolve conundrums regarding science, religion, and morality is to stand environmental ethics on sacred ground. Only when we perceive that the value of the living natural world is grounded in something greater than ourselves, in something other than our human ability to value it, will our rational capacities be satisfied fully that life on earth matters...Even though I consider a religious worldview essential for a compelling environmental ethics -however- most days I am agnostic. Yet I also have deep, effective experiences of the value of people, of our earthly home, of our miraculous kindred relations. These experiences are meaningless in the absence of the sacred, and yet they are as convincing as what I know scientifically. In the final analysis we must choose -either to believe in a fascinating but meaningless universe - or in one congruent with our own experiences of the value of people and place. Choosing is difficult. Yet, I am compelled by my own affective life, my aesthetic preferences, by a few moments in nature that are beyond words, to affirm that it all matters. I am not sure of much, but I am sure of this.