The world’s longest glass-bottomed bridge in China's Hunan Province, which opened just over two weeks ago has been closed to the public. The Brave Men’s Bridge is 984 feet long, and spans a 590-foot deep crevasse. People attempting to make the terrifying walk across resorted to closing their eyes, crawling, and holding on to the rope guide for dear life.

According to officials, the bridge is attracting too many tourist, deeming it unsafe. The glass floor is made up of a 24 millimeter (approximately one inch) thick glass, and there’s nothing but air below.

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Nearly 80% of U.S. dairy cows have their horns removed each year to protect their handlers and fellow cattle. But the practice, which is both painful and expensive, has come under increasing scrutiny from animal rights activists. Now, science may be coming to the rescue: A group of researchers announced last week that they successfully edited the genomes of dairy cows to make them hornless. The scientists used the transcription activator-like effector nucleases DNA editing technique to introduce a natural allele linked to hornlessness into dairy cow embryos. Five healthy calves were born, all without horns (above, left), the researchers report in a letter in Nature Biotechnology. The allele - called POLLED - is much more common in beef catt ...

Here's an explanation as to why humans have big bums (if you've ever thought about it )