With a tiny clump of cells from a man's scalp, scientists have grown new human hair in the laboratory.
But don't get too excited. A magic cure for baldness isn't around the corner. The experimental approach is quite limited and years from reaching the clinic — for many reasons.
The scientists have grown the hair only on a tiny patch of human skin grafted onto the back of a mouse. And as wispy locks go, the strands are pretty pathetic. Some hairs were white, and some didn't even make their way out of the skin.
If you've flown across Nebraska, Kansas or western Texas on a clear day, you've seen them: geometrically arranged circles of green and brown on the landscape, typically half a mile in diameter. They're the result of pivot irrigation, in which long pipes-on-wheels rotate slowly around a central point, spreading water across cornfields.
Yet most of those fields are doomed. The water that nourishes them eventually will run low.
As we all know, Americans are living longer. Women especially.
But here's what you may not know: French, German, Swedish, Italian, Japanese, British, Dutch and Canadian women are living longer too, but their lives are getting longer faster than ours. Take a look at this from the National Academy of Sciences.
Meteorologist Eric Holthaus has made his career monitoring the Earth's climate, and he's alarmed at what he sees. After reading a new, bleak international report on climate change, Holthaus has decided one important way to reduce his carbon footprint is to give up airplane travel for good.
Americans started thinking differently about U.S. dependence on imported oil 40 years ago this Sunday. Decades later, the U.S. is in the midst of a homegrown energy boom.
The oil embargo began in 1973. The United States had long taken cheap and plentiful oil for granted when Saudi Arabia shocked the country by suddenly cutting off all direct oil shipments in retaliation for U.S. support of Israel. Other Arab countries followed suit.
Prices soared. Gasoline lines stretched for blocks. Richard Nixon became the first of many U.S. presidents to call for energy independence.