Imagine you're on your way to Mars, and you lose a crucial tool during a spacewalk. Not to worry, you'll simply re-enter your spacecraft and use some microorganisms to convert your urine and exhaled carbon dioxide (CO2) into chemicals to make a new one. That's one of the ultimate goals of scientists who are developing ways to make long space trips feasible.
Read MoreToo many mussels can make for a sticky situation. The bivalves will take any opportunity to attach themselves to an underwater object. They can clog pipes, destroy scientific equipment, and damage dams and boats. Now, scientists have found a way to fight back.
Read MoreTechnologyReview.com The cornerstone of modern construction, cement accounts for a large chunk of our carbon emissions, but once it’s put to use it does something underappreciated.
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