Crime Map Beta - Trulia - StumbleUpon. The myth of the eight-hour sleep. Image copyright Other We often worry about lying awake in the middle of the night - but it could be good for you.
A growing body of evidence from both science and history suggests that the eight-hour sleep may be unnatural. In the early 1990s, psychiatrist Thomas Wehr conducted an experiment in which a group of people were plunged into darkness for 14 hours every day for a month. It took some time for their sleep to regulate but by the fourth week the subjects had settled into a very distinct sleeping pattern. They slept first for four hours, then woke for one or two hours before falling into a second four-hour sleep. Though sleep scientists were impressed by the study, among the general public the idea that we must sleep for eight consecutive hours persists. In 2001, historian Roger Ekirch of Virginia Tech published a seminal paper, drawn from 16 years of research, revealing a wealth of historical evidence that humans used to sleep in two distinct chunks. Image copyright bbc. The myth of muscle loss. The Beauty and Tragedy of Hungary's Supple Stringbike. The Csepel neighborhood of Budapest is a 2,000-acre sprawl of working-class apartments and factories.
A large swath of the district used to be solely the domain of heavy industry, where each street took its name from the goods produced inside the mostly abandoned brick buildings lining its curbs. It is here, in a nondescript building on Bicycle Street, blocks from Power Station Street and Petroleum Street, where a handful of engineers are building a bicycle from another world. The Stringbike is a cat’s cradle of alien beauty, a vehicle devastating in its mechanical elegance.
Mounted on a sinuous white frame (it also comes in black) the Stringbike’s drivetrain is made up of a triangular aluminum swinging arm connected via colorful Dyneema strings to spring-loaded hubs mounted on the rear axle. You pedal it like you’d pedal a regular bike, and the weird shape of the inside of the swinging arm converts your circular pedaling into a horizontal back-and-forth motion.
I love the Stringbike. 20 million mph winds seen blowing from black hole. A black hole discovered by NASA's Chandra X-ray Observatory is generating winds blowing at 20 million miles per hour - about three percent of the speed of light.
"This is like the cosmic equivalent of winds from a category five hurricane," says Ashley King from the University of Michigan. "We weren't expecting to see such powerful winds from a black hole like this. " IGR J17091 is a binary system in which a sun-like star orbits the black hole. It's located in the bulge of the Milky Way galaxy, about 28,000 light years away from Earth. The wind emanating from it is nearly 10 times faster than has ever been seen before from a stellar-mass black hole, and matches some of the fastest winds generated by supermassive black holes - which can be billions of times more massive. "It's a surprise this small black hole is able to muster the wind speeds we typically only see in the giant black holes," says Jon M Miller, also from the University of Michigan. Ten Most Extreme Substances Known to Man. Blog » The Crazy World of Visual Hallucinations.
The State of the Tablet Takeover in the Enterprise. Pictures of Young World Leaders. How Famous Companies Got Their Names. Ever wondered about how famous brands got their names from?
Here are a couple of explanations. Via. Study: Sleeplessness Causes Our Mental Circuits to Overheat.