feed info

82 articles from PhysOrg

Denver's airport closed for second day after winter storm

Denver's airport was closed for a second day Monday after a powerful late winter snowstorm dumped over 3 feet of heavy, wet snow on parts of Colorado and Wyoming, shutting down roads, closing state legislatures in both states and interfering with COVID-19 vaccinations.

Scientists plumb the depths of the world's tallest geyser

When Steamboat Geyser, the world's tallest, started erupting again in 2018 in Yellowstone National Park after decades of relative silence, it raised a few tantalizing scientific questions. Why is it so tall? Why is it erupting again now? And what can we learn about it before it goes quiet again?

Discovery of 'knock-on chemistry' opens new frontier in reaction dynamics

Research by a team of chemists at the University of Toronto, led by Nobel Prize-winning researcher John Polanyi, is shedding new light on the behavior of molecules as they collide and exchange atoms during chemical reaction. The discovery casts doubt on a 90-year old theoretical model of the behavior of the "transition state", intermediate between reagents and products in chemical reactions,...

Race influences flood risk behaviors

If you live in a flood prone area, would you—or could you—take measures to mitigate flood risks? What about others in your community? We are running out of time to ask this question according to The World Resources Institute, because global flood risk is increasing and loss projections for rivers alone put the cost over 500 billion dollars by midcentury.

Generating electricity through flooring surfaces

Ingo Burgert and his team at Empa and ETH Zurich have proven it time and again: Wood is so much more than "just" a building material. Their research aims at extending the existing characteristics of wood in such a way that it is suitable for completely new ranges of application. For instance, they have already developed high-strength, water-repellent and magnetizable wood. Now, together with the...

Study reveals new clues about the architecture of X chromosomes

Researchers at Massachusetts General Hospital (MGH) have uncovered new clues that add to the growing understanding of how female mammals, including humans, 'silence' one X chromosome. Their new study, published in Molecular Cell, demonstrates how certain proteins alter the architecture of the X chromosome, which contributes to its inactivation. Better understanding of X chromosome inactivation...

Lemurs can sniff out hidden fruit from afar

Lemurs can use their sense of smell to locate fruit hidden more than 50 feet away in the forest—but only when the wind blows the fruit's aroma toward them, according to a study published in the American Journal of Physical Anthropology.

NASA images reveal important forests and wetlands are disappearing in Belize

Using NASA satellite images and machine learning, researchers with The University of Texas at Austin have mapped changes in the landscape of northwestern Belize over a span of four decades, finding significant losses of forest and wetlands, but also successful regrowth of forest in established conservation zones that protect surviving structures of the ancient Maya.

Men of color avoid public places out of fear of involvement with criminal justice agents

The U.S. criminal legal system has expanded at a rapid pace, even as crime rates have declined since the 1990s. As a result, individuals' interactions with and surveillance by law enforcement are now commonplace. But citizens experience different interactions, with people of color who live in impoverished urban communities having the most frequent encounters. A new study interviewed young...

Seattle's minimum wage increase did not change crime or employment rates

Between 2015 and 2017, Seattle, Washington, became the first U.S. city to increase its hourly minimum wage to $15, more than double the federal minimum wage and 60 percent higher than Seattle's previous minimum wage. A new study examined the impact of this change on public safety. The study was motivated by the idea that since crime is sometimes the result of material deprivation, changes in the...