Originally published on Thu December 4, 2014 10:12 am
An article in the December issue of National Geographic looks at toxic waste sites in the U.S. and the more than 49 million Americans who live near them. NPR's Eric Westervelt talks with writer Paul Voosen about his piece.
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Originally published on Sat November 29, 2014 5:29 pm
There are more twins in the "millennial generation" than any other generation, thanks partly to a twin boom in the '90s. The main reason was a new technology called in vitro fertilization, which in its early days frequently produced twins, triplets and other multiple births.
Originally published on Mon December 1, 2014 10:42 am
Scientists — and anyone who lives with a canine — know that dogs pay close attention to the emotion in our voices. They listen for whether our tone is friendly or mean, how the pitch goes up or down and even the rhythms in our speech.
But what about the meaning of the words we say?
Sure, a few studies have reported on supersmart dogs that know hundreds of words. Chaser, a border collie in South Carolina, even learned 1,022 nouns and commands to go with them.