Новости за 19.05.2022

Labels like indica, sativa and hybrid—commonly used to distinguish one category of cannabis from another—tell consumers little about what's in their product, and could be confusing or misleading, suggests a new study of nearly 90,000 samples across six states.

A new University of Michigan study that forecasts the impacts of expanding roads and a planned railway on endangered tigers in Nepal's Chitwan National Park has yielded important findings that can aid conservation efforts.

Production of animal protein in China has increased by 800% over the past 40 years, driven by population growth, urbanization and higher worker wages. However, the amount of climate-warming nitrous oxide released from animal farming in the country has not risen as quickly, thanks to science-led policy and farm management interventions in the way animals are fed and their manure recycled.

Teaching the benefits of affirmative sexual consent while also validating anxieties people might experience about consent communication is an important step for improving sexual health and well-being, according to a new study.

Coats and scarves have come out prematurely in Brazil, as the south of the tropical country experiences a record-breaking cold spell, a menace for both homeless people and crops.

Male pheromones just might be the fountain of youth for aging female animals' eggs, according to a new Northwestern University study.

Leicester researchers searching for a "golden spike" to formally define humanity's current geological period—and acknowledge human impact on our planet—have announced a major step in their analysis at an international conference on Wednesday.

A family of proteins that have a role in ensuring many types of cells move and maintain their shape may promote disease when they act like workaholics and disrupt the cellular environment, new research suggests.

The high content of nitrogen-containing organic compounds (NOCs) in biocrude obtained from hydrothermal liquefaction of microalgae is one of the most concerning issues on the applications and environment. The biocrude obtained by hydrothermal liquefaction (HTL) needs further refining optimization, and the high concentration of nitrogen-heterocyclic compounds such as quinoline, pyridine, etc., will poison the catalyst used in the refining process, so that the deactivation of the catalyst will cause great difficulties in refining the biocrude. Читать дальше...

Epoxides belong to a class of organic compounds called "cyclic ethers" that are characterized by a three-atom ring. They are readily available compounds found in medicinal and agrochemical agents, as well as natural products. Epoxides are a valuable industrial precursor as they allow the synthesis of a diverse range of important alcohols, functional polymers, agrochemicals, and pharmaceuticals through a reductive ring-opening reaction. For the last 30 years, titanocene(III) has been the representative... Читать дальше...

American aerospace giant Boeing is making a third attempt to reach the International Space Station Thursday in a critical uncrewed test flight for its Starliner capsule, which has been beset by numerous failures and false starts.

When President Joe Biden went to Capitol Hill in October to arm-twist for his signature environmental and economic legislation, many Democrats remained hopeful the bill's climate provisions would survive.

On a humid August afternoon in 2020, two caskets―one silver, one white―sat by holes in the ground at a small, graveside service in the town of Travelers Rest, South Carolina.

What will it take to make our electronics smarter, faster, and more resilient? One idea is to build them from materials that are topological.

An international team of scientists from UCL (University College London), the Swedish Museum of Natural History, Natural History Museum (London) and the University of Florence have found a remarkable type of fossilization that has remained almost entirely overlooked until now.

A critical goal in genetics and evolution is predicting the effects of mutations that may happen in the future and inferring the effects of those that happened in the past. To make these predictions, scientists generally assume that a mutation's effects tested in the present apply to past and future versions of the same gene.

How will future warming of the planet impact cold-water corals? A new analysis of ancient evidence from the last major global warming event identifies food and oxygen supply as key environmental factors that influence the vitality of cold-water corals in the North Atlantic Ocean and the Mediterranean Sea. Rodrigo da Costa Portilho-Ramos of the University of Bremen, Germany, and colleagues present these findings in the open-access journal PLOS Biology on May 19.

When it comes to avian influenza, more commonly known as bird flu, all birds are not created equal.

A research team from the Institute of Mechanics of the Chinese Academy of Sciences has revealed the multi-scale characteristics of helicity in wall-bounded turbulent flows.

When sea turtle hatchlings emerge from their nests, typically at night, they crawl toward the ocean in what is known as "seafinding." They have to discriminate between the brighter seaward versus a dimmer landward horizon and then move toward the source of the light. That difference in radiance between opposing horizons enables them to find the ocean even when the uneven surface of the beach precludes a direct view of the sea, at least for a small hatchling.

Completing a nearly 30-year marathon, NASA's Hubble Space Telescope has calibrated more than 40 "milepost markers" of space and time to help scientists precisely measure the expansion rate of the universe—a quest with a plot twist.

Mark Twain once said, "Whisky is for drinking, and water is for fighting over!" But what if cooperation yielded more benefit than just going it alone, when it comes to urban water utilities?

Peach skin coloration is an important quality that affects the commercial value of the fruit. However, how light affects its coloration remains unclear.

Microplastics usually refer to plastic fibers, films, fragments, and microbes with size less than five millimeters. They are widely distributed in water, soil, sediment, the atmosphere, and even snow and ice, which impacts Earth's climate and environment.

It happened again over the weekend: another mass shooting and alleged hate crime, this time in Buffalo, New York, that left 10 dead and three injured. Most of the victims were Black. The 18-year-old accused shooter said he picked up his beliefs from internet forums and cited the "great replacement"—the theory that Jews and elites are intentionally replacing white people with people of color and immigrants—as one of the reasons for his alleged killing spree.