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Mostrando entradas de agosto, 2017
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7         FromQuarkstoQuasars There is No “Missing Link” in Evolution by  Jolene Creighton on May 7, 2015   7   Getty Anyone familiar with evolution knows that humans (relatively complex organisms) evolved from simpler forms of life over the course of billions and  billions  of years. Although we understand a great many things about how we evolved, there are a few gaps in our understanding. People sometimes refer to these gaps in our knowledge as “missing links.” This name stems from the idea that all life is connected in a kind of chain. You can trace it forwards, to see where life is heading, or backwards, to meet our predecessors and see where we’ve been. It is based on the belief that organisms can be ordered into very delineated organizations…a nice, neat line of progression. Click to View Full Infographic Ultimately, this concept stems from religious ideas concerning the “great chain of being....
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Justin Gatlin bows to Usain Bolt after upsetting him for 100-meter world championship   SHARE   TWEET   EMA By:  Michelle R. Martinelli | August 5, 2017 5:07 pm For years, Usain Bolt has been unbeatable. With his 2009 world record of 9.58 in the 100 meters seemingly untouchable, the Jamaican sprinter’s dominance remained on display even when he finished nowhere near it. Going into the 100-meter final of the track and field world championships in London on Saturday, it was assumed Bolt would claim another world title in his signature event. But with a combination of Bolt’s slow start and American Justin Gatlin’s late surge,  the fastest man in the world was upset in his last 100-meter race . Gatlin claimed his first world championship in 12 years, while  Bolt finished third behind American Christian Coleman . It was Bolt’s last time running the event with his plans to retire at the end of the championships, but he still has one mor...
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Players from Mexican national team ignore their coach, join MLS The Galaxy's Jonathan dos Santos, shown at a news conference on July 28, transferred from a team in Spain, where he had played since 2014. (Greg Beacham / Associated Press) Kevin Baxter Contact Reporter Juan Carlos Osorio pulled a chair up to the breakfast table, pointed a fork at his inquisitor and cleared up a misunderstanding before cleaning up his eggs. “I was misquoted as saying I don’t like the  MLS ,” the Mexican national team coach said this spring. “No. I never said that. I said it’s a strong league.” There’s no misunderstanding Osorio’s preference that his players stay in Europe through next summer’s World Cup instead of coming to MLS. And since he’s the guy who will be picking the Mexican roster, his words carry weight. “I would prefer my players to play in Europe,” he said. “In the top leagues.” Yet in the last several weeks, two of Mexico’s biggest stars have ignor...
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SCIENCE Cleaning a Dirty Sponge Only Helps Its Worst Bacteria, Study Says Trilobites By   JOANNA KLEIN   AUG. 4, 2017 Continue reading the main story Share This Page Share Tweet Email More Save Photo Microwaving your dirty sponge will only kill some of the bacteria on it, leaving the strongest, smelliest and potentially most pathogenic strains.   Credit Christophe Morin/IP3, via Getty Images  Stop. Drop the sponge and step away from the microwave. That squishy cleaning apparatus is a microscopic universe, teeming with countless bacteria. Some people may think that  microwaving  a sponge kills its tiny residents, but they are only partly right. It may nuke the weak ones, but the strongest, smelliest and potentially pathogenic bacteria will survive. Then, they will reproduce and occupy the vacant real estate of the dead. And your sponge will just be stinkier and nastier and you may come to regret having not just tossed...