5 Most Incredible Discoveries of the Week

A new jolt in the java world and an antibiotic meltdown make the list:

• Here's How Often Happy Couples Have Sex: Couples who constantly "Netflix and chill" aren't necessarily happier. In fact, having sex once a week is just about perfect, according to a study of surveys of more than 30,000 Americans gathered over 40 years. It seems to trump another commonly used measure of life satisfaction.
• Science Says Keep Pouring That Coffee: Harvard researchers find regular coffee consumption not only boosts longevity—it reduces your risk of diabetes, heart disease, and suicide. Non-smokers who drink three to five cups of coffee daily are 15% less likely to die, while those who drink more than five cups have a 12% lower risk. Odd is what researchers discovered about decaf.

• Second-Largest Diamond in History Found: That'll be some engagement ring. The CEO of Canadian mining outfit Lucara Diamond says he's "truly at a loss for words" after his company uncovered the biggest diamond found in more than a century, now the world's second-largest. Culled from a mine in Botswana, the stone comes in at 1,111 carats and is just slightly smaller than a tennis ball. Gauging its worth is a little tricky, though.
• Get Ready for the 'Antibiotic Apocalypse': We're thisclose to these meds not working anymore, per researchers who've discovered bacteria in China that can defeat a so-called "last-resort" antibiotic. MCR-1 appears to be widespread among Chinese livestock and is beginning to appear in an alarming number of human infections. It may not be cause for panic, though.
• How to Predict Your Kid's Future Intelligence With a Raisin: Researchers claim they can predict how well an 8-year-old will do in school using nothing but a raisin and cup when the child is a toddler. The idea is to see how long the kids can hold out going for the raisin—in what "could be the simplest test of childhood aptitude ever invented."

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