Even if you think you learned everything that you needed to know way back in biology class, everyone has knowledge gaps. And ...
Most of the recorded glacial earthquakes were discovered along the coast of Greenland, the largest ice cap in the Northern ...
Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...
Opinion
21hOpinion
The US used to be really dirty – environmental cleanup laws have made a huge difference
(THE CONVERSATION) Growing up in the 1970s, I took for granted the trash piles along the highway, tires washed up on beaches, and smog fouling city air. The famed “ Crying Indian” commercial of 1971 ...
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