Imagine walking into a hospital nursery full of pre-term babies and seeing not incubators, but bags full of fluid with infants tucked securely inside. It's not a far-off science fiction fantasy: on Tuesday, researchers announced unprecedented success in keeping sheep fetuses alive within an "artificial womb" apparatus. The results are incredible. But what do they mean for humans?
Your gut is something of an immunological mystery. Unlike the rest of the body, which tends to treat foreign invaders with a singular purpose—seek and destroy—the stomach cannot afford to be so indiscriminate. It exists to help fuel the body, and that means routinely welcoming foreign bodies in the form food.
About one in five Americans believes that the Sun revolves around the Earth. And if you happened to collect 12 of those people on a jury in which the orbiting properties of our solar system were up for debate, the headlines about the verdict would probably read “Earth revolves around Sun, declares American jury.” But that wouldn't make it true.
Your biological clock is probably the most reliable machinery in your body: it runs 24-7 to regulate vital functions from sleep to metabolism and remains stubbornly steadfast when you fly across time zones. Scientists still don't know exactly how this this internal clock works. But now researchers have identified a missing gear that could offer a cure for jet lag.