The World’s Biggest Underwater Cave

Researchers and professional divers have discovered that two caves—known as Sac Actun and Dos Ojos—off the coast of the Yucatan peninsula are actually connected by a long tunnel, making it the largest underwater cave known to us above-water creatures. The two caves measure 263km and 83km each, but now it’s known there is a 347km (216 mile) passage, meaning that Dos Ojos no longer exists, …

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Farewell to Ursula K Le Guin, a museum dedicated to selfies, eco-friendly jeans and more

1. A Greener Way to Make Blue Jeans While the majority of blue jeans are dyed with synthetically produced indigo, researchers at the University of California have potentially discovered a way to make the process more eco-friendly—and the answer is bacteria. Instead of adding to the many chemicals (including formaldehyde) released during the now-traditional practice, scientists created a strain of E. coli bacteria which only …

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Batteries inspired by eels, make-up kits in space, naturally pink chocolate and more

1. NASA’s Make-Up Kits Astronauts take plenty of grooming products into space—soap, lotion, deodorant, toothbrushes and more—but back in 1978, NASA believed women would also want a full make-up kit. NASA’s History Office shared an image of the kit, along with a quote from Sally Ride—the first American woman to go into space: “The engineers at NASA, in their infinite wisdom, decided that women astronauts …