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  1. Astronomers Puzzle Over Newfound Asteroid That Acts Like a Comet
  2. Relocation of Endangered Fish Spurs Recovery in Grand Canyon [Slide Show]
  3. Drone Pilot Challenges FAA on Commercial Flying Ban
  4. New Insight into Mosquito Sex Could Aid in Conquering Malaria
  5. A Pair of Stellar Newborns Shine Brightly
  6. Astronomers Puzzle Over Newfound Asteroid That Acts Like a Comet [Video]
  7. Comet from the Oort Cloud Careens toward the Sun
  8. Kepler Telescope Finds Plethora of Earth-Sized Planets
  9. Forbidden City Built from Stones Dragged on Ice
  10. 8 Apps That Turn Citizens into Scientists
  11. Nationwide Seismic-Monitor Array Nears Completion
  12. The World's 10 Most Polluted Places [Slide Show]
  13. Physicists Eye Quantum-Gravity Interface
  14. Malicious Ransomware Can Hold Computer Files Hostage
  15. Flying the Coop: Antibiotic Resistance Spreads to Birds, Other Wildlife
  16. Children Face Asthma Risk If Mothers Exposed to Pollutants
  17. Kepler Telescope Finds Plethora of Earth-Size Planets
  18. Chelyabinsk Eyewitnesses Help Scientists Resolve Meteor Mysteries
  19. Tainted Melons Bring Harsh Penalties for Colorado Farmers
  20. Smartphone-Based Imaging System Spots Nanoscale Objects
  21. Precision Gene Editing Paves Way for Transgenic Monkeys
  22. Neuroelectronics Make Smarter Computer Chips
  23. Autism Symptoms Seen in Babies
  24. Who Is the Best Scientist of All Time?
  25. Republicans Put 'National Interest' Requirement on National Science Foundation
  26. New Limb Regeneration Insight Surprises Scientists
  27. Babies' Weak Immune Systems Let In "Good" Bacteria
  28. Republicans Put "National Interest" Requirement on National Science Foundation
  29. Global Warming Finally Reaches the Last Arctic Region
  30. No Firm Proof that Arafat Was Poisoned
  31. Forget What You've Heard: Humans Are Not Using More Than 1 Planet
  32. Nocturnal Animals Take Chances on Moonlit Dinners
  33. Japan's Offshore Wind Power Rises within Sight of Fukushima Nuclear Plant
  34. Japan and Partners Team Up to Tackle Neglected Diseases
  35. How Beijing--and the Rest of China--Recycles Plastic [Excerpt]
  36. No Firm Proof That Arafat Was Poisoned
  37. Cocktail Accessories Modeled after Nature s Survival Mechanisms
  38. Gravity Maps Reveal Why the Dark Side of the Moon Is Covered with Craters
  39. The Color of Water Reflects State of Environment [Slide Show]
  40. Cosmic Rays Not Causing Climate Change
  41. Electron Appears Spherical, Squashing Hopes for New Physics Theories
  42. Gravity Maps Reveal Why the Moon's Far Side Is Covered with Craters
  43. Did Climate Change Cause Typhoon Haiyan?
  44. Smelly Microbes Help Hyenas to Communicate with Each Other
  45. Indigenous Elders Abandon Faith in UN Climate Talks
  46. Hormone-blocking Chemicals Found in Native American Families
  47. Space Telescope Spots Unprecedented Asteroid with 6 Tails
  48. Should Battery Fires Drive Electric Cars Off the Road?
  49. National Calamity in Philippines Fueling Isolation, Risk of Disease
  50. Social Scientists Hit Back at NSF Grant Rules
  51. Two 'Big Science' NIH Programs Get the Ax
  52. Physicists Now Want a Very Large Hadron Collider
  53. The 63rd Annual Lindau Meeting: New Drugs for Old Bugs
  54. Warsaw Talks to Thrash Out UN Climate Roadmap
  55. South Korea Reveals Moon-lander Plans
  56. Did Iconic Archaeopteryx Lose Its Ability to Fly?
  57. Smelly Microbes Help Hyenas to Communicate with One Another
  58. Indigenous Elders Abandon Faith in U.N. Climate Talks
  59. Hormone-Blocking Chemicals Found in First Nation Families
  60. U.S. to Allow Transplants of HIV-infected Organs
  61. How Climate Change and Plate Tectonics Shaped Human Evolution
  62. Leopard-like Creature Is the Oldest Big Cat Yet Found
  63. Some Danish Advice on the Trans-Fat Ban
  64. NASA Probe to Track Mars s Missing Atmosphere
  65. The 63rd Annual Lindau Meeting: New Drugs for Old Bugs [Video]
  66. Haiyan-Battered Philippine Cities Struggle to Resurrect Networks
  67. How Many Friends Can Your Brain Handle?
  68. Leopardlike Creature Is the Oldest Big Cat Yet Found
  69. U.S. to Allow Transplants of HIV-Infected Organs
  70. South Korea Reveals Moon-Lander Plans
  71. Astronomers Surprised by Large Space Rock Less Dense than Water
  72. Evolution of an Individual's Cancer Can Be Tracked Cell by Cell
  73. Dengue Fever Makes Inroads into the U.S.
  74. Warsaw Talks to Thrash Out U.N. Climate Roadmap
  75. 2 "Big Science" NIH Programs Get the Ax
  76. Octopuses Propelled by Wormlike Movement
  77. Westerly Winds Could Counteract Nearly Half of Antarctic Sea-level Rise Expected By 2
  78. Flooding Undermines Seattle's Flower Farmers
  79. Should Vodka Be Marketed as Gluten-Free?
  80. Nations Squabble over Room in the Atmosphere for Pollution
  81. Westerly Winds Could Counteract Nearly Half of Antarctic Sea Level Rise Expected by 2
  82. Octopuses Propelled by Wormlike Movement [Video]
  83. Did the Iconic Archaeopteryx Lose Its Ability to Fly?
  84. NASA Pulls the Plug on Plutonium Power Source
  85. New Bacterial Life-Form Discovered in NASA and ESA Spacecraft Clean Rooms
  86. Frederick Sanger, Father of DNA Sequencing, Dead at 95
  87. Cheaters Use Cognitive Tricks to Rationalize Infidelity
  88. Fenced-In Lions Divide Wildlife Conservationists
  89. How Traffic Jams Decentralize Cities
  90. Americas' Natives Have European Roots
  91. Crowd-sourcing Goes Mainstream in Typhoon Haiyan Response
  92. A Basic Rule of Chemistry Can Be Broken, Calculations Show
  93. You ve Got Mail about STDs
  94. Mission to Map Earth's Magnetic Field Readies for Take-off
  95. Climate Science Lawyers Up
  96. Uncertain Future for Iconic "Keeling Curve" CO2 Measurements
  97. The Good and Bad News about Frog Abnormalities
  98. Crowdsourcing Goes Mainstream in Typhoon Haiyan Response
  99. Pay-As-You-Go Solar Energy Finds Success in Africa
  100. Only Half of Drugs Removed by Sewage Treatment
  101. The Galaxy Collision Next Door
  102. Mission to Map Earth's Magnetic Field Readies for Takeoff
  103. Milky Way s Black Hole Is Shooting Particle Jets
  104. Pay-as-You-Go Solar Energy Finds Success in Africa
  105. Have We Saved the Sharks?
  106. Dozens of Labs Respond to Call to Bolster Reliability of Psychology Research
  107. FDA Cancer Czar Floats Change to Drug Review Process
  108. How Happiness Boosts the Immune System
  109. Study Linking Genetically Modified Corn to Rat Tumors Is Retracted
  110. Remnants Suggest Comet ISON Still Going
  111. Fearful Memories Passed Down to Mouse Descendants
  112. Stealth Camera Takes Pictures Virtually in the Dark
  113. Physics Solves Centuries-Old Mystery of Red Paint Darkening
  114. 'Genetic Surgery' May Be Enabled by a New Technology
  115. Humans Are Becoming More Carnivorous
  116. Dispute over Infinity Divides Mathematicians
  117. Dangerous Global Warming Closer than You Think, Climate Scientists Say
  118. Could Atomically Thin Tin Transform Electronics?
  119. Nudity Found to Offer New Social Benefits
  120. Dangerous Global Warming Closer Than You Think, Climate Scientists Say
  121. Safe Limit for Global Warming Is Lowered Dramatically by Experts
  122. "Genetic Surgery" May Be Enabled by a New Technology
  123. NASA Funding Shuffle Alarms Planetary Scientists
  124. 25 Train Tragedies Could Have Been Prevented in the Past Decade by This Technology
  125. Earliest Human DNA Shows Unforeseen Mixing with Mystery Population
  126. Bacterium Reverses Autism-Like Behavior in Mice
  127. Dyslexia Linked to Brain Communication Breakdown
  128. Mosquito Scent-Tracking Discovery Could Lead to Better Repellents
  129. Unregulated Chemicals Found in Drinking Water
  130. How Long Have Humans Dominated the Planet?
  131. Federal Flood Maps Left New York Unprepared for Sandy, and FEMA Knew It
  132. Smart Wig Could Compete with Google Glass
  133. Will to Persevere Can Be Triggered by Electric Stimulation
  134. Bacterium Reverses Autismlike Behavior in Mice
  135. Hopes Dashed for HIV Cure with Bone Marrow Transplant
  136. In a 'Rainbow' Universe, Time May Have No Beginning
  137. Powder Rive Basin Coal on the Move
  138. Strategies for Aging Vary Widely across 46 Species with Some Scarcely Deteriorating
  139. In a "Rainbow" Universe Time May Have No Beginning
  140. Federal Flood Maps Left New York City Unprepared for Sandy, and FEMA Knew It
  141. Mercury Is Shrinking More Than Thought
  142. Unraveling the Mystery of How Antidepression Drugs Work
  143. Did Mayor Mike Bloomberg Make New Yorkers Healthier?
  144. University Animal Research Practices Slammed in Report
  145. Powder River Basin Coal on the Move
  146. Bee Researchers Make Friends with a Killer
  147. New Signs of Water on Mars Ramp Up Search for Life
  148. Universe Really Is a Hologram According to New Simulations
  149. As Lionfish Invade the Caribbean and Gulf of Mexico, Conservationists Say Eat Up [Sli
  150. Physicists Find a Link between Wormholes and Spooky Action at a Distance
  151. Mysteries of Fluid Flow Unraveled by Knots
  152. Strategies for Aging Vary Widely across 46 Species, with Some Scarcely Deteriorating
  153. Banana Fungus Creeps Closer to World's Key Plantations
  154. How Nuclear Power Can Stop Global Warming
  155. U.S. Budget Deal Would Ease Science Agencies' Pain
  156. Florida Tries to Map Its Home-Swallowing Sinkholes
  157. Jupiter's Moon Europa Spotted Spouting Water
  158. When a Medical Test Reveals an Unwelcome Surprise
  159. Monitor Lizards Found to Breathe Uni-Directionally Like Birds
  160. Death of a Comet: What We Learned from the Passing of ISON
  161. The Science of U.S. Energy: A Q&A with Secretary Ernest J. Moniz
  162. Green Chemistry Awards Go to Vegan Leather, Chrome Plating
  163. Life after a Nuclear Catastrophe: An Inside Look [Slide Show]
  164. Monitor Lizards Found to Breathe Unidirectionally Like Birds
  165. The Universe Really Is a Hologram, According to New Simulations
  166. The Gut s Microbiome Changes Rapidly with Diet
  167. Booster of Red Blood Cells Synthesized for First Time
  168. Shark-cull Plan Draws Ire
  169. Clues Sought for Sea Star Die-off
  170. Polynesian People Used Binary Numbers 600 Years Ago
  171. Flame-Taming Electric Fields Could Make Power Plants Cleaner
  172. Mosaic of Lakes and Seas Spotted on Saturn's Moon Titan
  173. Nature News: Readers' Choice of Top Science Stories of 2013
  174. Shark Cull Plan Draws Ire
  175. Leading Drug Company to Quit Paying Doctors for Promotional Talks
  176. Ancient Roman Metal Used for Physics Experiments Ignites Science Feud
  177. Building a Better Lobster Trap
  178. Computers Can Be Hacked Using High-Frequency Sound
  179. Human Exposure to Possibly Neurotoxic Pesticides Should Be Reduced, EU Safety Agency
  180. How to Win the War on Coal
  181. Climate Change Threatens Retirement Savings
  182. What Is Iceland without Ice?
  183. Clues Sought for Sea Star Die-Off
  184. Cells' Fiery Suicide in HIV Provides New Treatment Hope
  185. Star-mapping Mission Lifts Off
  186. Chameleons Talk Tough by Changing Colors
  187. Scientific American 's Top 10 Science Stories of 2013
  188. Loudspeaker Is First Complete 3D-Printed Consumer Electronic
  189. Narcolepsy Confirmed as Autoimmune Disease
  190. Rivers in Wintry Cities Remain Salty Year-Round
  191. Human Exposure to Possibly Neurotoxic Pesticides Should Be Reduced, E.U. Safety Agenc
  192. How Mayor Michael Bloomberg Thought Big on Climate
  193. Star-Mapping Mission Lifts Off
  194. Readers' Choices of Nature 's Top Science Blog Posts in 2013
  195. Distant Planet Weighed Using Clues from Starlight
  196. A Call for Urgent Talks on Mutant Flu-Strain Research
  197. Is the Secret to Cheap Energy Storage Hiding in Harlem? [Slide Show]
  198. First Exomoon Possibly Glimpsed
  199. A Wish List of Future Space Missions
  200. "Dark Money" Funds Climate Change Denial Effort
  201. How Science Goes Viral
  202. A New Tool to Help Mathematicians Pack
  203. Identical Astronauts Prepare for First Twin Study in Space
  204. Nature 's Best Science Features of 2013
  205. Debilitating Virus Infects Island Paradise
  206. Memory Trick Increases Password Security
  207. The Most Popular Scientific American Stories of 2013
  208. Triple-Threat Method Sparks Hope for Nuclear Fusion Energy
  209. Cancer-linked Flame Retardants Eased Out of Furniture in 2014
  210. Naked Mole Rat Named "Vertebrate of the Year"
  211. Why a Safety Device That Can Stop Overdoses by Kids Isn't Widely Used
  212. Cancer-Linked Flame Retardants Eased Out of Furniture in 2014
  213. Why My Parents have a Closet Full of Lightbulbs
  214. When Was the Last Time Volcanoes Erupted on the East Coast?
  215. What Happens When 10 Inches of Snow Isn't 10 Inches?
  216. 2013 Saw Environmental Protests, Regulatory Conflicts of Interest and Lingering Myste
  217. Why My Parents Have a Closet Full of Lightbulbs
  218. Mysterious Light Associated with Earthquakes Now Linked to Geological Rift Zones
  219. Dark Matter Search Considers Exotic Possibilities
  220. Mysterious Light Associated with Earthquakes Now Linked to Geologic Rift Zones
  221. Supervolcanoes Erupt by Their Own Rules
  222. Dark Matter Near Earth Peaks Every March, New Study Suggests
  223. A Missing Genetic Link in Human Evolution
  224. Ancient Times Table Hidden in Chinese Bamboo Strips
  225. Hubble Telescope Reveals Deepest View of the Universe Yet
  226. 'Highly Mobile' Testicles Frustrate Effort to Calm Hippos in Captivity
  227. Bizarre Star Could Host a Neutron Star in Its Core
  228. Leaked Files Slam Stem-Cell Therapy
  229. BPA Exposure Linked to Prostate Cancer
  230. Island Lizards Are Tamer Than Mainland Counterparts
  231. New Cosmic Distance Measurement Points the Way to Elusive Dark Energy
  232. New Initiative Seeks to Make All Particle-Physics Papers Freely Available
  233. WHO Endorses 8 Projects to Tackle Neglected Diseases
  234. Is There a New Nuclear Kid on the Block?
  235. Location, Location, Lifestyle Determines Global Warming Pollution
  236. Hubble Telescope Reveals Deepest View of the Universe Yet
  237. "Highly Mobile" Testicles Frustrate Effort to Calm Hippos in Captivity
  238. Leaked Files Slam Stem Cell Therapy
  239. What You Should and Shouldn t Worry about after the Fukushima Nuclear Meltdowns
  240. Anti-tobacco Efforts Have Saved Millions of Lives Worldwide
  241. Cheap Battery Can Store Energy for a Rainy Day
  242. Switch to Natural Gas Slashes Power Plant Pollution
  243. Fish Go Birding [Video]
  244. How the "Global Cooling" Story Came to Be
  245. Can a Blind Person Be a Racist? [Excerpt]
  246. Is the Universe Made of Math? [Excerpt]
  247. A Star at the Edge of Eternity
  248. How Dangerous Is the Coal-Washing Chemical Spilled in West Virginia?
  249. Anti-Tobacco Efforts Have Saved Millions of Lives Worldwide
  250. After 23andMe, Another Personal Genetics Firm Is Charged with False Advertising