Male frogs have sex on land to keep competitors away

When it comes to the birds and the bees, frogs are remarkably diverse: They do it in water, on land and on leaves. Researchers have assumed that natural selection drove frogs to take the evolutionary step to reproduce on land as a way for parents to avoid aquatic...

FDA updates warnings for fluoroquinolone antibiotics

The U.S. Food and Drug Administration today approved safety labeling changes for a class of antibiotics, called fluoroquinolones, to enhance warnings about their association with disabling and potentially permanent side effects and to limit their use in patients with...

Farewell, silent Philae

Tomorrow, 27 July 2016 at 09:00 UTC / 11:00 CEST, the Electrical Support System Processor Unit (ESS) on Rosetta will be switched off. The ESS is the interface used for communications between Rosetta and the lander, Philae, which has remained silent since 9 July 2015....

Researchers use origami to advance cardiac catheters

A graduate student in the University of Georgia College of Engineering is turning to the ancient Japanese art of origami for inspiration as he designs a novel cardiac catheter. Austin Taylor is developing a device that’s small enough to fit on the tip of a...

Super-bright supernova appears to have exploded twice

Supernovae are among the most violent phenomena in the universe. They are huge explosions which put an end to the lives of certain types of stars. These explosions release immense amounts of energy, so much that sometimes we can see them from Earth with the naked eye,...

Researchers develop placenta-on-a-chip

Researchers at the University of Pennsylvania have developed the first placenta-on-a-chip that can fully model the transport of nutrients across the placental barrier. The flash-drive-sized device contains two layers of human cells that model the interface between...

Protein interaction drives muscle atrophy

Muscle wasting, or atrophy, is a serious condition that affects millions of Americans. Aging is the most common cause, but muscle atrophy also happens as a result of muscle disuse—after injury or spinal cord damage, for example—malnutrition, critical illness, or...

Trolls often waive their anonymity online

From politicians and celebrities, companies and organizations to individuals of certain nationalities and the socially disadvantaged, the list of parties affected by hate speech in social media is long. Insulting, threatening or derogatory comments are commonplace in...

Diabetes drugs may ease addiction

Drugs that mimic the action of glucagon-like peptide 1 (GLP-1), and which are being used clinically to treat obesity and Type 2 diabetes, also may have a role in treating drug abuse. That’s the implication of a study in mice by Aurelio Galli, Ph.D., and colleagues...

Spit: The diagnostic tool of the future?

In the name of spit science, Douglas Granger and his colleagues have collected saliva samples from a restless polar bear, a college marching band and Navy medics dodging bullets in simulated combat. The mouthwatering liquid is a gold mine of information, says Granger,...

Menopause, sleepless nights may make women age faster

In a pair of studies published today UCLA researchers report that menopause accelerates biological aging and that insomnia, which often accompanies menopause, also has a clear association with age acceleration. The dual findings suggest both factors could increase...

Tiny 3D models may yield big insights into ovarian cancer

With a unique approach that draws on 3-D printing technologies, a team of University of Wisconsin–Madison researchers is developing new tools for understanding how ovarian cancer develops in women. About 1.5 percent of American women will be diagnosed with ovarian...

New antibody drug continues to show promise for treatment of HIV

Great strides have been made in recent years to develop treatment options for HIV, and the disease can now be controlled with anti-retroviral drugs. But a cure remains elusive and current medications have limitations: they must be taken daily, for life, and can cause...

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