Credit Steve Zylius / University of California, Irvine
F. Sherwood Rowland was the man who issued an early warning to the world: In a lab, some 40 years ago, he and a post-doctoral student Mario Molina found that chlorofluorocarbons (CFC) — the byproducts of everyday things like hairsprays and deodorants — had the potential to destroy the Earth's atmosphere. Rowland found that a single chlorine atom could destroy 100,000 ozone atoms in the stratosphere.
The University of California, Irvine, where he taught, announced that Rowland had died on Saturday. He was 84.
Rhino poaching has been on the rise in the past few years. In South Africa and other regions where rhinos run, poachers have been killing or darting rhinos with tranquilizers for their horns.
Rather than adorning walls, many horns are ground up into medicines, sold mostly in Southeast Asia. A possible — yet controversial — way to stop poaching may be rhino ranches, where the horns are harvested for sale and the animals are allowed to grow new ones.
Originally published on Mon March 5, 2012 11:50 am
Toola, the southern sea otter, with a surrogate pup.
Credit Randy Wilder / Monterey Bay Aquarium
Toola may not be a household name, but she made quite an impression on the staff of the Monterey Bay Aquarium, where she lived most of her adult life.
Just look at how Dr. Mike Murray, an aquarium veterinarian, described the sea otter:
"I will argue that there is no other single sea otter that had a greater impact upon the sea otter species, the sea otter programs worldwide, and upon the interface between the sea otters' scientific community and the public."