Does the word "at" occur in the "Star-Spangled Banner"? If you're like me, it won't take you long to answer. You sing the song through at faster-than-normal speed in a whisper, or in your head, until you hit the phrase: "at the twilight's last gleaming." (Hat tip: cognitive scientist Daniel Levitin gives this example in his book This is Your Brain on Music.)
Chemistry teachers don't need to go the way of Breaking Bad's Walter White and make methamphetamine if they're looking for a compelling side gig.
Andy Brunning, a high school chemistry teacher in the U.K., makes beautiful infographics on everyday chemistry on his blog, Compound Interest. Thanks in part to the American Chemical Society, which has turned several of his posts into videos, his clever visuals have been going viral.
Neanderthals clubbed their way to the top of an ancient food chain, slaying caribou and mammoths. But a peek inside their prehistoric poop reveals that the meat-loving early humans may have also enjoyed some salad on the side.
Researchers excavating a site in southern Spain where Neanderthals lived 50,000 years ago were initially looking for remnants of food in fireplaces. Then they stumbled upon tiny bits of poop â which turned out to be the oldest fecal matter from a human relation ever discovered.
The electric eel's powerful ability to deliver deadly shocks â up to 600 volts â makes it the most famous electric fish, but hundreds of other species produce weaker electric fields. Now, a new genetic study of electric fish has revealed the surprising way they got electrified.