Showing results for "Twilight" in Science & Engineering

With their towering, cinnamon-colored trunks and dusky green canopies, ponderosa pine has long been a charismatic icon of the American West. Yet a quiet unraveling has begun: in the past decade, in a vast area from Santa Fe to the Sierras, more than two hundred million ponderosa have died. While some trees will survive in cooler places, scientists estimate that by mid-century less than five percent of the ponderosa in the American Southwest may remain. As the very character of this vast region shifts, what will be left behind? And how can we come to terms with such profound loss?

As recently as 11,000 years ago - "near time" to geologists - mammoths, mastodons, gomphotheres, ground sloths, giant armadillos, native camels and horses, the dire wolf, and many other large mammals roamed North America. In what has become one of science's greatest riddles, these large animals vanished in North and South America around the time humans arrived at the end of the last great ice age.

Join us as we examine the world of Charles Fort and Fortean phenomena both remarked upon by the man himself as well as more recent events.