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from Wikipedia, the free encyclopedia

Race

The term race is commonly used to distinguish a population of humans from other populations.

The most widely used human racial categories are based on visible traits (especially skin color and facial features), genes, and self-identification.

Conceptions of race, as well as specific racial groupings, vary by culture and time and are often controversial due to their impact on social identity and identity politics.

Note: This article excerpts material from the Wikipedia article "Race", which is released under the GNU Free Documentation License.

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last updated on 2014-10-21 at 7:21 pm EDT

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FORA.tv (Oct. 4, 2013) The Physics Behind Oracle's America's Cup Victory California Academy of Sciences - African Hall Why go fast? Compared to moving slowly, the advantages seem obvious: find food first, forage more widely, and escape more rapidly! But, in the water, being speedier incurs huge energetic costs, with moving a little bit faster skyrocketing the amount of fuel you need. This trade-off between speed and energy propels the evolutionary race for fish, robots, or sailboats: you have to find ways to go faster with ever-greater efficiency. Over generations, the evolutionary race can produce biological and engineering surprises: distantly related fish and boat hulls that have similar streamlined shapes, materials and construction techniques that manage to both stiffen and lighten bodies and hulls, specialization of propulsive systems, and constraints on making turns and tight maneuvers. While the evolutionary processes employed by nature and engineers are similar, there are important differences in how fish or boats are built. For both kinds of designers, the laws of evolution and physics interact to create and constrain the drive for speed. Dr Long will discuss how robotics research lab studies fast fish! A book signing will follow the talk for Dr. Long's latest book titled Darwin's Devices: What Evolving Robots Can Teach Us About the History of Life and the Future of Technology.
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RAW VIDEO: Man With Muscular Dystrophy Runs Marathon

RAW VIDEO: Man With Muscular Dystrophy Runs Marathon

AP (Oct. 14, 2013) A man with muscular dystrophy was the last runner to cross the finish line of the Chicago Marathon _ nearly 17 hours after he started the race. Maickel Melamed made it across the finish line of the 26.2-mile race at 1:30 a.m. Monday. (Oct. 14)
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Electric Race Cars Ready to Storm 2013 Pikes Peak Hill Climb

Electric Race Cars Ready to Storm 2013 Pikes Peak Hill Climb

TFL Car (June 29, 2013) Super powerful and crazy fast electric race cars are a completely new breed of vehicles that promise to make for exciting racing this year at the 2013 Pikes Peak Hill Climb. We caught up with Toyota Electric Car TRD team (last year's record setting team ) and Mitsubishi as they practices running the 2013 Pikes Peak Hill Climb in the early hours of the day before the big race this weekend.
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Solar-Powered Car Race Kicks Off in Australia

Solar-Powered Car Race Kicks Off in Australia

Reuters (Oct. 7, 2013) Teams from around the world race the most advanced solar cars in the 2013 Bridgestone World Solar Challenge. Sharon Reich reports.
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