As Earth's Spin Slows, Clocks Get Another Leap Second temim 9:15 AM temim The history of the leap second reveals a curious pattern of decreasing frequency since its adoption 43 years ago -- Read more on ScientificAmerican.com from Scientific American News http://ift.tt/1R25zee via IFTTT Twitter Facebook Google Tumblr Pinterest Artikel Menarik Lainnya Smartphone App Screens Kids for Ear ProblemsParents can use a digital tool at home to detect fluid behind the eardrum -- Read more on ScientifHurricane Aftermath Leaves Florida with Years of Major Wildfire ThreatTinderboxes of storm-felled trees are a growing concern in the Southeast, as climate change also inRescue Drones Need to Learn How Lost Humans ThinkNew research seeks to improve the effectiveness of unmanned aerial vehicles in search and rescue opIs the EPA Stifling Science on Chemical Toxicity Reports?Critics say changes to the agency’s review process will harm public health -- Read more on ScientiDid a Meteor from Another Star Strike Earth in 2014?Questionable data clouds the potential discovery of the first known interstellar fireball -- Read Can Robots Help Pick Up after the Recycling Crisis?They will have to overcome the challenges of America’s convenient single-stream recycling system -
EmoticonEmoticon