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203,184 articles from PhysOrg

Summer forage capabilities of tepary bean and guar in the southern great plains

Perennial warm-season grasses do not provide high-quality forage during mid to late-summer, which limits yearling stocker cattle from maintaining high rates of growth in the Southern Great Plains. This shortage has resulted in a continual search by researchers for annual legumes that can provide sufficient amounts of nutritious forage during August through September.


WEDNESDAY 27. MAY 2020


A potential explanation for urban smog: Aerosol particle growth higher in cold climates

The effect of nitric acid on aerosol particles in the atmosphere may offer an explanation for the smog seen engulfing cities on frosty days. Under laboratory conditions, researchers at CERN in Switzerland observed the formation of atmospheric aerosols and discovered new information on the link between nitrogen oxides originating in traffic and the energy industry, and the climate and air quality....

Artificial intelligence reveals mechanism for kin selection in a wild primate

More like mom or dad? Human babies always get this curious look on their face combined with the question whom the child resembles most. The answers vary depending on the degree of kinship, gender and the time of assessment. Mandrills, monkeys living in Equatorial Africa, may recognize facial features coding relatedness better than humans. Scientists at the German Primate Center—Leibniz Institute...

Exploring the use of 'stretchable' words in social media

An investigation of Twitter messages reveals new insights and tools for studying how people use stretched words, such as "duuuuude," "heyyyyy," or "noooooooo." Tyler Gray and colleagues at the University of Vermont in Burlington present these findings in the open-access journal PLOS ONE on May 27, 2020.

Study shows erosion of ozone layer responsible for mass extinction event

Researchers at the University of Southampton have shown that an extinction event 360 million years ago, that killed much of the Earth's plant and freshwater aquatic life, was caused by a brief breakdown of the ozone layer that shields the Earth from damaging ultraviolet (UV) radiation. This is a newly discovered extinction mechanism with profound implications for our warming world today.

Researchers use whole living cells as 'templates' to seek for bioactive molecules

A study performed by researchers at the Institute for Advanced Chemistry of Catalonia (IQAC) from the Spanish National Research Council (CSIC) pioneers the use of whole living cells (human lung adenocarcinoma) in dynamic combinatorial chemistry systems. This research, published in the journal Angewandte Chemie International Edition, proposes a new methodology to discover new bioactive molecules in...

Public parks guaranteeing sustainable well-being

An international team led by the University of Geneva (UNIGE) has ascertained how green spaces contribute to the well-being of city-dwellers. The research shows that parks play an essential role in the well-being of individuals, regardless of their social class, and that they cannot be replaced by other venues where people meet, such as shopping centers. When these parks are closed—as during the...

SpaceX on cusp of launching astronauts, back on home turf

With bad weather threatening a delay, two NASA astronauts suited up for the launch of a SpaceX rocket ship Wednesday on a history-making flight to the International Space Station that was seen as a giant leap forward for the booming business of commercial space travel.

Researchers take a cue from nature to create bulletproof coatings

Shrimp, lobsters and mushrooms may not seem like great tools for the battlefield, but three engineers from the University of Houston are using chitin—a derivative of glucose found in the cellular walls of arthropods and fungi—and 3-D printing techniques to produce high-impact multilayered coatings that can protect soldiers against bullets, lasers, toxic gas and other dangers.

Airborne science discovers complex geomorphic controls on Bornean forests

Tropical forests contain some of the most biodiverse and dynamic ecosystems in the world. Environmental conditions such as precipitation, temperature, and soils shape the biota of the landscape. This influence is especially noticeable when comparing the towering trees found in low elevation forests to the hardier, shorter ones found at the top of tropical mountains. Together, these factors create...