Science news.

• Martian Clay Contains Chemical Implicated in the Origin of Life, Astrobiologists Find


• Amount of Dust Blown Across the Western U.S. Is Increasing


• From Hot Springs to HIV, Same Protein Complexes Are Hijacked to Promote Viruses


• Bridge Species Drive Tropical Engine of Biodiversity


• Study Examines Cancer Risk from Pediatric Radiation Exposure from CT Scans


• Unfrozen Mystery: H ₂ O Reveals a New Secret


• Biotech Crops Vs. Pests: Successes and Failures from the First Billion Acres


• Potential New Target to Thwart Antibiotic Resistance: Viruses in Gut Confer Antibiotic Resistance to Bacteria


• Scientists Size Up Universe's Most Lightweight Dwarf Galaxy


• 2-D Electronics Take a Step Forward: Semiconducting Films for Atom-Thick Circuits


• Flowering at the Right Age: Alpine Rock Cress Uses a Ribonucleic Acid to Measure Its Age and Tell When It's the Right Time to Flower


• Lifespan-Extending Drug Given Late in Life Reverses Age-Related Heart Disease in Mice: Rapamycin


• Simple Theory May Explain Mysterious Dark Matter


• People Are Overly Confident in Their Own Knowledge, Despite Errors


• Mysterious Monument Found Beneath the Sea of Galilee


• Mice Give New Clues to Origins of Obsessive-Compulsive Disorder


• British Butterfly Desperate for Warm Weather This Summer


• New Theory Proposes Solution to Long-Running Debate as to How Stable the Earth System Is


• Dance of the Atoms: Clustering of Atoms Observed


• Ötzi the Iceman's Dark Secrets: Protein Investigation Supports Brain Injury Theory