In a classroom at a transitional housing program in San Mateo, California, Brianna is talking about her 2-year-old daughter, Hope. She's having trouble getting Hope to talk to her—but the toddler is perfectly happy to converse with the television while she watches Little Einstein.
While many animals become less fertile as they age, only three species—humans, pilot whales, and killer whales—have females that regularly live well beyond their reproductive prime. These are the only species where we see grandmas acting like grandmas: they've long stopped producing offspring of their own, so they pivot to helping care for their children's children.
I'm three and half years into a lifelong diet. It's not to lose weight or build muscle, and there are no cheat days—no, not even for a freshly-baked chocolate croissant that I can smell a block away. I get a metal probe put down my throat every year so my doctor can confirm that I'm really, truly, 100 percent adhering to my diet. As if that wasn't awesome enough, I also get to pay anywhere from 30-500 percent more for basic food.
It's a fact frequently shared at parties and across social media: urine is sterile, so you should drink it if you find yourself in a waterless pinch. But like so many cocktail party factoids, this one is absolutely not true. Urine ain't sterile, friends, and neither is any part of you.
Scientists are just starting to figure out how the bacteria that live in, on, and around us can influence our health—and the vagina remains one of the most mysterious human microbiomes. Now, research suggests that certain vaginal bacteria can actually their hosts more vulnerable to HIV.