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SLAC National Accelerator Laboratory, Planets, LCLS , Linac Coherent Light Source, Diamonds

EMBARGOED

A reporter's PressPass is required to access this story until the embargo expires on 21-Aug-2017 11:00 AM EDT

Science

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Cuba, Coral Reefs, coral conservation, Coral Ecosystems, Ocean Exploration, NOAA, Mesophotic coral reefs, ROV, Underwater Vehicles, Snorkeling, Expedition, Discovery

Ocean Exploration Uncovers One of Cuba's Hidden Natural Treasures

After nearly two years of planning, a team of scientists from the U.S. and Cuba has explored never-before-studied mesophotic coral reefs along the entire coast of Cuba, spanning about 1,500 miles. Except for a few places along the coast, prior to this expedition, there were virtually no data or charts indicating what was beyond the shallow reef zone.

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Paleontology, Imaging, X-Ray, neutron imaging, CT imaging

Unique Imaging of a Dinosaur’s Skull Tells Evolutionary Tale

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Researchers using Los Alamos’ unique neutron-imaging and high-energy X-ray capabilities have exposed the inner structures of the fossil skull of a 74-million-year-old tyrannosauroid dinosaur nicknamed the Bisti Beast in the highest-resolution scan of tyrannosaur skull ever done.

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Evolution, population history, admixture, Neanderthal, Denisovan, Human Evolution, archaic, DNA

New Look at Archaic DNA Rewrites Human Evolution Story

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A U-led team developed a method for analyzing DNA sequence data to reconstruct early history of archaic human populations, revealing an evolutionary story that contradicts conventional wisdom about modern humans, Neanderthals and Denisovans. The Neanderthal-Denisovan lineage nearly went extinct after separating from modern humans. Just 300 generations later, Neanderthals and Denisovans diverged around 744,000 years ago. The global Neanderthal population grew to tens of thousands of individuals living in fragmented, isolated populations.

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Kansas State University, K-State, KSU, Keith Gido, fish, Aquatic, Streams, Drought, Ecology, Groundwater

Fish Out of Water: Loss of 350 Miles of Great Plains Streams Causing Changes in Aquatic Food Web

A decrease in Great Plains streams, fed by decreasing ground water, is changing fish assembles according to research published Proceedings of the National Academy of Sciences.

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Spectroscopy, infrared absorption spectrometry, Doping, Performance Enchancing Drugs, Molecular Biology, Chemical Analysis, Laser

Beware Doping Athletes! This Sensor May Be Your Downfall

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A new light-trapping sensor, developed by a University at Buffalo-led team of engineers and described in an Advanced Optical Materials study, makes infrared absorption more sensitive, inexpensive and versatile. It may improve scientists’ ability use to sleuth out performance-enhancing drugs in blood samples, tiny particles of explosives in the air and more.

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SLAC National Accelerator Laboratory, lightsource, Stanford Synchrotron Radiation Lightsource, SSRL, Nanocrystals, Superlattices, Materials Science

Scientists Watch ‘Artificial Atoms’ Assemble into Perfect Lattices with Many Uses

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Some of the world’s tiniest crystals are known as “artificial atoms” because they can organize themselves into structures that look like molecules, including “superlattices” that are potential building blocks for novel materials. Now scientists from the Department of Energy’s SLAC National Accelerator Laboratory and Stanford University have made the first observation of these nanocrystals rapidly forming superlattices while they are themselves still growing.

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Neolithic, Cattle, Grazing, Arbon Bleiche 3

Analysis of Animal Teeth Suggests Neolithic Cattle Grazed at Home and Away

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An international team of researchers has shown in unprecedented detail that prehistoric farmers took their animals away from permanent settlements to graze in more fertile areas – probably because of high demand for land locally.

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Life

Social and Behavioral Sciences

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Archaeology, Australia, Anthropology

Artifacts Suggest Humans Arrived in Australia Earlier Than Thought

A team of researchers, including a faculty member and seven students from the University of Washington, has found and dated artifacts in northern Australia that indicate humans arrived there about 65,000 years ago — more than 10,000 years earlier than previously thought.

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Dogs, Reseach, Animals

Study Reveals Origin of Modern Dog Has a Single Geographic Origin

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By analyzing the DNA of two prehistoric dogs from Germany, an international research team led by Krishna R. Veeramah, PhD, Assistant Professor of Ecology & Evolution in the College of Arts & Sciences at Stony Brook University, has determined that their genomes were the probable ancestors of modern European dogs. The finding, to be published in Nature Communications, suggests a single domestication event of modern dogs from a population of gray wolves that occurred between 20,000 and 40,000 years ago.







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