NPR News

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Hundreds of children across the U.S. have been sickened by a respiratory illness caused by a virus known as enterovirus D68. Some of the patients have experienced paralysis of limbs.
French economist Jean Tirole studies oligopolies — markets that are controlled by a handful of powerful, interdependent companies.
Doing business in China is getting tougher for some foreign companies. In the past year, Chinese government regulators have raided their offices, claiming to investigate monopoly practices.
Starting Wednesday, six "astronauts" will live in a geodesic dome on a remote volcanic outcrop in an eight-month simulation of a Mars mission. Robert Siegel talks to commander Martha Lenio.
On average, more than 400 pedestrians per year are killed by trains. They are sometimes children, trying to cross the tracks or walking along side them — but the railroads see them as trespassers.
Trains carrying oil from North Dakota pass through American towns daily — and sometimes they derail and explode. The oil industry is now under pressure to make the oil less volatile before shipping.