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POPSOne World, Many Minds: Intelligence in the Animal Kingdom In recent decades scientists have cast aside a linear, sequential view of brain evolution in which the human brain incorporates components resembling the brains of modern fishes, amphibians, reptiles and birds and have adopted a new view of divergently branching brain and mind evolution. Substantial cognitive abilities have evolved multiple times, based on differing neural substrates—including the mental agility that enables us humans to decipher brain evolution and its meaning
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POPSA New Picture of the Early Earth In a new analysis, published in the current issue of the journal Nature, the zircons, the only bits of earth older than 4 billion years definitively known to have survived, provide another tantalizing hint about the Hadean period. Dr. Harrison and two U.C.L.A. colleagues, Michelle Hopkins, a graduate student, and Craig Manning, a professor of geology and geochemistry, report that minerals trapped inside zircons offer evidence that the processes of plate tectonics — the forces that push around the planet’s outer crust, forming and shaping the continents and oceans — had already begun.
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POPSThe 'morning after' HIV drug cocktail To my surprise I found that most people I know are not aware to the existence of such a life saving option. The treatment has some severe side effects but also a very high (81%) success rate. Keep this option in mind and inform your friends.
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POPSHumanity May Hold Key For Next Earth Evolution If we recognize humanity is an integral part of the planet and begin working for a healthy Earth, then planetary evolution could move forward to some unknown future. On the other hand, Langmuir said, if we continue to view the Earth as something that is separate, that we merely use, then the resulting practices could damage the environment enough to stall planetary evolution, even causing it to fall back to a level where it supports just microscopic life. “The story of the Earth is our story. We are intimately connected in every fiber of our being, in every breath we take. We’re inseparable from the Earth,” Langmuir said.
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POPSGreen is the new red white and blue We in America talk like we’re already “the greenest generation,” But here’s the really inconvenient truth: We have not even begun to be serious about the costs, the effort and the scale of change that will be required to shift our country, and eventually the world, to a largely emissions-free energy infrastructure over the next 50 years. Thomas L. Friedman is a columnist for The New York Times specializing in foreign affairs. a bit long article but worth read.
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POPSThe new, free speech, gatekeepers "Given their clashing and sometimes self-contradictory missions — to obey local laws, repressive or not, and to ensure that information knows no bounds; to do no evil and to be everywhere in a sometimes evil world — Wong and her colleagues at Google seem to be working impressively to put the company’s long-term commitment to free expression above its short-term financial interests. But they won’t be at Google forever, and if history is any guide, they may eventually be replaced with lawyers who are more concerned about corporate profits than about free expression. “We’re at the dawn of a new technology,” Walker told me, referring not simply to Google but also to the many different ways we now interact online. “And when people try to come up with the best metaphors to describe it, all the metaphors run out. We’ve built this spaceship, but we really don’t know where it will take us.”
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