"Some bomb-sniffing dogs trained to help fight terrorism are turning their olfactory attention toward a different scourge: Burmese pythons in Florida's Everglades National Park."

"Koalas are expected to be listed as a threatened species across parts of Australia from Monday, and some environment groups claim the government has excluded the marsupial from protection in certain areas due to mining interests."

"Where have all the bees gone? The question has vexed farmers, beekeepers, regulators and scientists since the fall of 2006, when U.S. bee populations began their mysterious decline."

"A new biotech corn developed by Dow AgroSciences could answer the prayers of U.S. farmers plagued by a fierce epidemic of super-weeds. Or it could trigger a flood of dangerous chemicals that may make weeds even more resistant and damage other important U.S. crops. Or, it could do both."

"In 2006, when beekeepers began to report that their hives were suffering from a mysterious affliction, a wide variety of theories were offered to explain what was going on. ... Over the last few weeks, several new studies have come out linking neonicotinoids to bee decline. As it happens, the studies are appearing just as 'Silent Spring,' Rachel Carson’s seminal study of the effect of pesticides on wildlife, is about to turn fifty: the work was first published as a three-part series in The New Yorker, in June, 1962. It’s hard to avoid the sense that we have all been here before, and that lessons were incompletely learned the first time around."

"New research shows that killer whales are inhaling bacteria, fungi and viruses once believed to be found only on land. Some of the pathogens are highly virulent. And some are even antibiotic-resistant."

"To the untrained eye, a weed is just a weed, and few of us can tell a thistle from a teasel. But for Paul Heiple and his team of Weed Warriors, knowing the difference is essential to their work routing out invasive plants that threaten the native species at Edgewood Park, a 500-acre natural preserve that overlooks California’s Silicon Valley."