Deep In Gulf Water, Bacteria Are Eating Spilled Oil

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A loggerhead turtle was found oiled in the Gulf waters. It was cleaned on-site, then sent to Mote Marine Laboratory in Sarasota, Fla., for rehabilitation and monitoring. Christopher Joyce/NPR hide caption

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'Virtual Shellfish' Aid In Studying Oil's Effects

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Almost 2 million gallons of oil dispersants were used to dilute the oil spill in the Gulf of Mexico, and though testing indicates the toxic chemical has largely dissipated in the water, scientists warn that the long-term effects are still unknown. Above, a dispersant plane passes over an oil skimmer in the Gulf of Mexico. Patrick Semansky/AP hide caption

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Lasting Impact Of Dispersants Unclear, Senate Told

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Massive 'Dead Zone' Threatens Gulf Marine Life

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Marine Lance Corporal Jimmy Finley from Louisiana grills steaks at a Forward Operating Base  in Deleran, Afghanistan. Joe Raedle/Getty Images Europe hide caption

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Meat, Fire And The Evolution Of Man

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Om Nom Nom: As we began to shy away from eating primarily fruit, leaves and nuts and began eating meat, our brains grew. We developed the capacity to use tools, so our need for large, sharp teeth and big grinders waned. From left, a cast of teeth from a chimpanzee, Australopithecus afarensis and a modern human. William Kimbel/Institute of Human Origins hide caption

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Food For Thought: Meat-Based Diet Made Us Smarter

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The human shoulder (above) allows the arm to hang freely and enables us to flex the arm at the elbow and perform tasks in front of us with ease. Because of its location and structure, the human arm is great for throwing. The ape shoulder (below), by contrast, allows for a different range of motion and is more suited to hanging from trees. Maggie Starbard/NPR hide caption

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Armed And Deadly: Shoulder, Weapons Key To Hunt

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A flint-knapper makes sharp stone flakes by striking a flint "core" with a hammerstone. Human Origins Initiative hide caption

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A Handy Bunch: Tools, Thumbs Helped Us Thrive

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Feet On The Ground: Barefoot runners tend to land on the balls of their feet rather than on their heels the way most shoe-runners do. Rick Roeber went shoeless in 2003 and has clocked more than 13,000 barefoot miles since. Charlie Riedel/AP hide caption

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For Humans, Slow And Steady Running Won The Race

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Anthropologist Brian Richmond is trying to determine what the footprints of modern humans can tell us about how we evolved. NPR hide caption

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Fast Feet: A Springy Step Helps Humans Walk

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Baby Steps: Learning To Walk, The Hominid Way

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The Leviathan melvillei attacks a medium-size baleen whale in this artist's rendition. C. Letenneur/MNHN hide caption

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Prehistoric Whale Ate Other Whales For Breakfast

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BP Moves On To Tricky New Fix To Capture Oil

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