April 9 (UPI) --NASA is offering $3 million to anyone who proposes technology to solve an unusual problem: recycling feces and other human waste in space. The space agency's LunaRecycle Challenge ...
In the late 1950s, archaeologists discovered a cave in the Rio Zape Valley of Mexico. There were ancient human remains in the cave dated to between 660 and 1430 A.D., many of which belonged to ...
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