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The more scientists learn about certain materials and chemicals, the more likely they are to find something bad about them. This, understandably, leads to pressure to replace those chemicals.


As you might imagine, designing an apparatus for sampling asteroids in a microgravity environment is no easy trick.

So it's no small feat that Michael Cruciger and Nafeesa Khan, who both...


Every year, there are more than 15,000 cases of severe intestinal failure. Even though there are thousands of donor grafts, doctors perform fewer than 140 intestinal transplants.