Grandma orcas know best

Like many human families, killer whales often rely on the wisdom of matriarchs to help them endure hardships and thrive, new research has found. Male orcas usually live for about 50 years, but females often survive well into their 90s, making them one of the few mammalsthat live for decades after they stop reproducing.   Marine scientists studied the behavior […]

Read more

When going ‘green’ makes people sick

When communities like San Francisco and Seattle began banning plastic bags, said Ramesh Ponnuru, it seemed like a public-spirited thing to do. But’ benign-seeming laws often have unintended consequences— and the plastic-bag ban is now producing a sickening result. The reusable shopping bags that people now use to bring groceries home turn out to be breeding grounds for bacteria carried […]

Read more
1 3 4 5 6 7 455