World News Instant Index 10/11/2012

VIDEO: University of Newcastle researchers determine a knife against a glass bottle to be the worst.

From the unconventional and awe-inspiring to the cute and cuddly, here's a look at some of the most interesting photos, videos, and stories that have our newsroom talking today.

11:22 p.m. ET Debate Body Language Policy wasn't the only difference between Vice President Joe Biden and Republican vice presidential nominee Rep. Paul Ryan during tonight's debate, the way the two men carried themselves also contrasted. Take a look at some of the most telling gestures in this ABC News slideshow.

Saul Loeb/AFP/Getty Images

3:24 p.m. ET Diamonds Are Forever A team of researchers from the U.S. and France say they have discovered a planet double the size of Earth that is probably " covered in graphite and diamond rather than water and granite." Named 55 Cancrie, the planet takes 18 hours to orbit its host star and has a surface temperature of 3,900 degrees Fahrenheit, making it unlikely to sustain life.

Artist's conception of 55 Cancri e. Haven Giguere/Yale University

1:13 p.m. ET The Harshest Sound in the World Researchers at the University of Newcastle have determined that the harshest sound to the human ear is a knife against a glass bottle. The research team had volunteers listen to 74 sounds in an MRI machine and rank the experience.

11:27 a.m. ET Wendy's Makeover Wendy's has updated its logo for the first time since 1983. Aiming for a simpler, cleaner look, the fast food chain changed its lettering, added more white space and made the iconic cartoon girl with red pigtails more contemporary.

Image credit: AP

10:26 a.m. ET Study Links Country's Chocolate Consumption to Number of Noble Prize Winners In a paper in the New England Journal of Medicine, Dr. Franz Messerli reported "there was a close, significant linear correlation between chocolate consumption per capita and the number of Nobel laureates." Messerli pursued the paper based on previous research showing that chocolate may improve cognitive function.

Credit: Jack Hollingsworth/Getty Images

10:07 a.m. ET The Last 6.5-Ounce Coke Bottle The last 6.5-ounce returnable, glass Coke bottle rolled off the production line in Winona, Minn., Tuesday. The small bottler, who had been refilling bottles since 1932, said it did not make financial sense to continue. Despite the demise of the 6.5-ounce bottle, Coke said that its widely available 8-ounce glass bottles was going nowhere.

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