Pybc Why the Paleo Diet and Lifestyle Are Not Based in Scientific Reality
In a remote and dangerous corner of Afghanistan, under the protective roar of Apache attack helicopters and B-52 bombers, special agents and investigators did their work.They walked the landscape with surviving witnesses. They found a rock stained with the blood of the victim. They re-enacted the killings mdash; here the U.S. Army Rangers swept through the canyon in their Humvee, blasting away; here the doomed man waved his arms, pleading for recognition as a friend, not an enemy. Cease fire, friendlies, I am Pat expletive Tillman, damn it! he shouted, again and again.The latest inquiry into Tillman s death by friendly fire should end next month; authorities have said they intend to release to the public only a synopsis of their report. But The Associated Press has combed through the results of more than two years of investigations mdash; reviewed thousands of pages of internal Army documents, interviewed dozens of people familiar with the case mdash; and uncovered some startling findings.One of the four shooters, Staff Sgt. Trevor Alders, had recently had PRK laser eye surgery. Although
stanley cup he could see two sets of hands straight up, his vision was hazy, he said. In the absence of friendly identifying signals, he assumed Tillman and an allied Afghan who also was killed were enemy.
stanley cup Another, Spc. Steve Elliott, sa
stanley website id he was excited by the sight of rifles, muzzle flashes and shapes. A third, Spc. Stephen Ashpole, said he saw two figures, and just aimed where e Lwdc Jury Reaches Verdict in Abortion Doc Slay
Shark skin is famously sleek and dragless, the envy of swimsuit designers. Perhaps less famous is what shark skin oddly rough surface looks like up close: an eerie matrix of microscopic tooth-like scales. Now, scientists are 3D printing artificial shark skin in hopes of unlocking its swimming secrets. The 3D-printed shark skin above is the work of George Lauber and his team at Harvard, who started by scanning a piece of mako shark skin bought from the fish market. Then they spent a year tinkering with materials and protocols to recreate it in the lab. The final result is a flexible substrate embedded with th
stanley cup e tiny scales, called denticles, that norma
stanley cup usa lly cover a shark body. While 3D printing can replicate complex structures, it not perfect: the denti
stanley tumbler cles are 10 times bigger than in nature because of the machine limited resolution. Still, when Lauber and his team put the shark skin to test in the water, it worked. The printed skin was attached to a flexible foil that could flap like a swimming fish. At certain low speeds, the rough surface reduced drag by up to 8.7 percent compared to a perfectly smooth surface. That seems counterintuitive, doesn ;t it鈥攖hat a rough surface would produce less drag than a smooth one These denticles are shaped to channel water, preventing tiny eddies that ordinary slow down even smooth surfaces. With a 3D printer, the researchers hope to tweak the shape and spacing of the denticles鈥攆or example, optimizing
