This Strange Crystal Has Two Melting Points And We Finally Know Why
In 1896, German chemist Emil Fischer noted something very strange about a molecule named acetaldehyde phenylhydrazone.
Archaeologists Discover Mysterious 12,000-Year-Old Stones That Could Be the World’s Oldest Wheel Technology
Early human cultures likely used stones as spindle whorls to spin fibers into yarn. A collection of perforated pebbles discovered at an archaeological site in Israel may be spindle whorls, marking a ...