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80 articles from PhysOrg

'Echo mapping' in faraway galaxies could measure vast cosmic distances

When you look up at the night sky, how do you know whether the specks of light that you see are bright and far away, or relatively faint and close by? One way to find out is to compare how much light the object actually emits with how bright it appears. The difference between its true luminosity and its apparent brightness reveals an object's distance from the observer.

AI is helping scientists discover fresh craters on Mars

Sometime between March 2010 and May 2012, a meteor streaked across the Martian sky and broke into pieces, slamming into the planet's surface. The resulting craters were relatively small—just 13 feet (4 meters) in diameter. The smaller the features, the more difficult they are to spot using Mars orbiters. But in this case—and for the first time—scientists spotted them with a little extra...

Venom glands similar to those of snakes are found for first time in amphibians

A group led by researchers at Butantan Institute in Brazil and supported by FAPESP has described for the first time the presence of venom glands in the mouth of an amphibian. The legless animal is a caecilian and lives underground. It has tooth-related glands that, when compressed during biting, release a secretion into its prey—earthworms, insect larvae, small amphibians and snakes, and even...

New research explores how multinational firms can manage corruption

For many developing countries, it is difficult to break the cycle of corruption on their own. Historically, multinational firms have assumed that they have two options available when dealing with corruption in developing countries: "play the game," meaning pay bribes or engage in corrupt activities, or "leave the table" by avoiding investing in countries where corruption is widespread. New...

Firefighters brace for violent winds in Northern California

Firefighters were warily watching for "violent" winds expected in California's wine country Thursday that could fan the flames of a massive blaze that has destroyed more than 140 homes and is threatening thousands more in a small town known for hot springs, mud baths and wineries.

Pearl Jam concerts drive tourism, hotel demand

You could say Seattle came alive with more than an even flow of tourism dollars from a pair of highly-anticipated Pearl Jam concerts, according to rockin' new research by West Virginia University economists.

Chemical innovation stabilizes best-performing perovskite formulation

Perovskites are a class of materials made up of organic materials bound to a metal. Their fascinating structure and properties have propelled perovskites into the forefront of materials' research, where they are studied for use in a wide range of applications. Metal-halide perovskites are especially popular, and are being considered for use in solar cells, LED lights, lasers, and photodetectors.

How scientific leaders can enact anti-racist action in their labs

A new paper provides 10 steps that principal investigators (PIs) and research group leaders can follow to help cultivate anti-racist professional and learning environments. V. Bala Chaudhary of DePaul University, Chicago, and Asmeret Asefaw Berhe of U.C. Merced present these guidelines in the open-access journal PLOS Computational Biology.

Ice Age manatees may have called Texas home

Manatees don't live year-round in Texas, but these gentle, slow-moving sea cows are known to occasionally visit, swimming in for a "summer vacation" from Florida and Mexico and returning to warmer waters for the winter.

NASA finds Hurricane Marie rapidly intensifying

NASA infrared imagery revealed that Hurricane Marie is rapidly growing stronger and more powerful. Infrared imagery revealed that powerful thunderstorms circled the eye of the hurricane as it moved through the Eastern Pacific Ocean.

Tunable free-electron X-ray radiation from van der Waals materials

Technion researchers have developed accurate radiation sources that are expected to lead to breakthroughs in medical imaging and other areas. They have developed precise radiation sources that may replace the expensive and cumbersome facilities currently used for such tasks. The suggested apparatus produces controlled radiation with a narrow spectrum that can be tuned with high resolution, at a...

Detector array demonstrates novel microwave readout

Over the years, SRON has developed increasingly sensitive Transition Edge Sensors (TES) for space missions such as SPICA and Athena. One of those TES detector arrays, developed as backup X-ray microcalorimeters for Athena, has now played a vital role to demonstrate a new readout technology developed at the National Institute of Advanced Industrial Science and Technology (AIST) in Japan. This...