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The Case of the Missing Diamonds

A Washington University physicist practiced at finding tiny diamonds in stardust from the pre-solar universe has repeatedly failed to find them in Younger Dryas sedimentary layers, effectively discrediting the hypothesis that an exploding comet caused the sudden climate reversal at the end of the last Ice Age.

(Embargo expired on 19-Dec-2016 at 12:00 ET)

Democratizing the Space Race with Nanosatellite Technology

Smaller, faster, cheaper—miniaturised space technology opens the door to future University-based space exploration.

Disgust Is Way of Communicating Moral Rather Than Self-Interested Motivation

New research carried out by psychologists at the University of Kent has shown for the first time that a decision to express disgust or anger depends on the motives a person seeks to communicate.

Undocumented Migrants May Suffer from Severe Psychological Distress

Undocumented migrants are an especially vulnerable group with regard to their health status, living conditions, and barriers to access to health care and social welfare. In a study that explored 90 undocumented migrants’ mental health care needs, the level of psychological distress was extremely high.

New Prehistoric Bird Species Discovered

A team of geologists at the University of Rochester has discovered a new species of bird in the Canadian Arctic. At approximately 90 million years old, the bird fossils are among the oldest avian records found in the northernmost latitude, and offer further evidence of an intense warming event during the late Cretaceous period.

Reducing the Duration of Antibiotics Does More Harm than Good When Treating Ear Infections in Young Children

In a landmark trial, researchers have demonstrated that when treating children between 9 and 23 months of age with antibiotics for ear infections, a shortened course has worse clinical outcomes without reducing the risk of antibiotic resistance or adverse events.

(Embargo expired on 21-Dec-2016 at 17:00 ET)

Here's Why You Don't Feel Jet-Lagged When You Run a Fever

A clump of just a few thousand brain cells, no bigger than a mustard seed, controls the daily ebb and flow of most bodily processes in mammals -- sleep/wake cycles, most notably. Now, Johns Hopkins scientists report direct evidence in mice for how those cell clusters control sleep and relay light cues about night and day throughout the body.

(Embargo expired on 22-Dec-2016 at 12:00 ET)

Festive Nebulas Light Up Milky Way Galaxy Satellite

Astronomers using NASA's Hubble Space Telescope have captured two festive-looking nebulas, situated so as to appear as one. Known as NGC 248, the nebula resides in the Small Magellanic Cloud, a dwarf galaxy that is a satellite of our Milky Way galaxy.

New Antimatter Breakthrough to Help Illuminate Mysteries of the Big Bang

Collaborative team report on first precision study of antihydrogen

Amazonia's Best and Worst Areas for Carbon Recovery Revealed

following emissions released by commercial logging activities has been published in the journal eLife.

Biologists Follow ‘Fossilizable’ Clues to Pinpoint When Mammal, Bird and Dinosaur Ancestors Became Athletes

The study is the first to draw a link between RBC size and microscopic traces of blood vessels and bone cells inside bones. They found that extinct mammal and bird relatives had smaller RBCs and were likely better athletes than earlier terrestrial vertebrates. The timing of RBC-size reduction coincided with Earth's greatest mass extinction 252 mya.

(Embargo expired on 22-Dec-2016 at 12:00 ET)

Re-Wired: great stories you might have missed

This week's highlights of the week include: The first mapping of carbon recovery in Amazonian forests, A new antimatter breakthrough that would make Mr. Spock proud, The benefits of sunlight on our immune system, and the history of the Christmas turkey.