First used for battle in China in about 900 A.D., gunpowder spread throughout Eurasia by the end of the 13th century, eventually revolutionizing warfare as a propellant in firearms and artillery. Meanwhile, master gunners ...
Materials Science
Sep 22, 2021
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After walking on the moon, astronauts hopped back into their lunar lander, bringing the heavenly body's dust along with them on their spacesuits.
Other
Jun 20, 2019
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The latest species to join Dutch police is hard at work behind the blacked-out windows of a building in Rotterdam: rats learning to sniff out crime and a new forensic future.
Plants & Animals
Sep 26, 2013
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