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.
We like to think that human speech is special. It defines our species and separates us from those animals that we'd rather think of as inferior. The trouble is that it's difficult to know when and how human speech arose because “language expressed via speech leaves no fossils behind.”
California is usually drenched with sunlight. But this week, it's just drenched. A series of storms have pummeled the state, dropping staggering quantities of rain and snow—leading to flooding, mudslides, and a whole lot of water pouring into reservoirs that were just about dried out. But is it enough to end the state's persistent drought?
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.
It's Friday night (well, maybe Saturday morning) and you're drunk. Like, really drunk. No shame, dude, it's the weekend. But even though you pre-gamed on pizza and beer before starting your downward spiral of an evening (which, we might add, included about a thousand calories worth of alcohol), you find yourself craving food at 1 am. Like, a lot of food. All of the food.
Let's face it, working out during the week is a struggle. Few full-time jobs leave time for exercise during the workday itself, so that leaves two options: Waking up way too early in the morning or going to the gym right after work—and getting home way too late at night. Add family responsibilities, sleeping, and commuting to the equation, and the prospect becomes nearly impossible.
A mysterious, potentially deadly neurotoxin that poisons humans by way of shellfish has now been linked to warming ocean waters. The new findings could help fisheries predict spikes of this substance in their catches, allowing them to protect human consumers and mitigate their own financial losses. But one question remains unanswered: as climate change edges ocean temperatures higher and higher, will blooms of the dangerous neurotoxin follow suit?