Last month monarch butterflies began an annual northward journey from their overwintering habitat in Mexico. Monarch expert Lincoln Brower discusses the dwindling monarch populations, and explains how habitat loss in Mexico and a decline in milkweed plant numbers in the U.S. may be harming the familiar orange and black fliers.
Legislation introduced in several states would require anyone who records evidence of animal abuse to turn it over to authorities within a set period of time. But animal rights activists aren't welcoming these measures: They see the bills as veiled attempts to stifle long-term undercover investigations that can prove a pattern of abuse.
Melissa Block talks with researcher Thore Bergman about his findings that a rare type of Ethiopian monkey, the gelada, makes a human-like sound that could offer insights into the evolution of human speech.
More than 1,000 sick and dying sea lion pups have been found stranded since the beginning of the year, from Santa Barbara to San Diego. As scientists try to figure out why, one animal rescue worker says that in nearly three decades on the job, he's never seen anything like it.
The National Mississippi River Museum announced last week that Cashew had been stolen. Instead, the animal had gotten wedged behind a museum wall. Embarrassed about losing track of a tortoise, a staff member popped Cashew into the elevator to make it appear she'd been returned by a thief.
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