May 9, 2018, 10:14 a.m.
Astronaut-Educator Ricky Arnold Conducts Science on Station
Astronaut-educator Ricky Arnold conducts student-designed science on the Space Station.
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In a new study of childhood mortality rates between 1961 and 2010 in the United States and 19 economically similar countries, researchers report that while there's been overall improvement among all the countries, the U.S. has been slowest to improve.https://www.sciencedaily.com/releases/2018/01/180108191937.htm
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