Our closest relatives, chimpanzees and gorillas, breast-feed their offspring for several years. Some baby orangutans nurse until they are 7 years old.
But modern humans wean much earlier. In preindustrial societies, babies stop nursing after about two years. Which raises the question: How did we get that way? When did we make the evolutionary shift from apelike parenting to the short breast-feeding period of humans?
This is MORNING EDITION, from NPR News. I'm Linda Wertheimer.
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And I'm David Greene. We now know the tornado that struck the city of Moore, Okla., on Monday was an EF5, with winds over 200 miles an hour. That designation is the strongest possible rating for a tornado. Federal, state and local teams are on the ground this morning, cleaning up debris and tending to survivors. But there is little - if any - chance of finding any more survivors; that, according to the fire chief in Moore.
Lawmakers are demanding to know what went wrong and who is to blame at the IRS. Two Senate committees held hearings yesterday on the agency's aggressive handling of applications from conservative groups who were seeking tax-exemption. A top IRS official facing a House committee, today, intends to invoke her Fifth Amendment right not to testify. NPR's Peter Overby reports.
Good morning. I'm Linda Wertheimer. A drummer in Baltimore pulled off the interstate yesterday, out of gas. So he pulled his drum kit out of the trunk and sat up on the shoulder and played along with traffic. When a state trooper pulled up, drummer boy explained he was just biding his time until help arrived, practicing his chops. He got away without a ticket and with the gift of gas from the highway department. Rock on. It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.
Well, our wings have been clipped by some listeners. Yesterday, we told you about how some scientists in Canada saw their research crops destroyed by geese. We used the term Canadian geese. Listeners like Frank Kohn said we got that wrong.
FRANK KOHN: They're not Canadian geese. They're Canada geese because they don't hold passports, as far as I know, and it's not a nationality. It's a species name.