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Astronauts start spacewalk series to fix cosmic ray detector

Court rules Trump EPA unlawfully ignored dangerous chemicals

After 20 years, Washington tribe hopes to hunt whales again

NASA warned of safety risks in delayed private crew launches

Plan would protect 21 coral hot spots in Gulf of Mexico

Old dogs, new tricks: 10,000 pets needed for science

China tests Mars lander in international cooperation push

Doctors: Warmer world is unhealthier place for children

Maybe banking culture doesn’t always make people dishonest

3 universities, medical center get $1B to teach and research