6,284 articles mezi dny 1.5.2021 a 31.5.2021

Red foxes feasting on Australian mammals

Scientists at Murdoch University's Harry Butler Institute (HBI) have discovered that red foxes are ravaging a larger range of Australian animals than previously realized, with 70% of fox diet samples turning up mammal remains.

Browning could make lakes less productive, affecting food webs and fish

As more dissolved organic matter enters lakes across the northeast United States, darkening the lakes in a phenomena called "browning," new research shows that these waters may be growing less productive and able to sustain less life. In a study published today in Limnology and Oceanography Letters, scientists found that, rather than enriching lakes with nutrients as had previously been assumed,...

Scientists identify protein that activates plant response to nitrogen deficiency

Nitrates are critical for the growth of plants, so plants have evolved sophisticated mechanisms to ensure sufficient nitrate uptake from their environments. In a new study published in the journal Nature Plants, researchers at Nagoya University, Japan, have identified a plant enzyme that is key to activating a nitrate uptake mechanism in response to nitrogen starvation. This finding explains how...

The price is right: Modeling economic growth in a zero-emission society

Pollution from manufacturing is now widespread, affecting all regions in the world, with serious ecological, economic, and political consequences. Heightened public concern and scrutiny have led to numerous governments considering policies that aim to lower pollution and improve environmental qualities. Inter-governmental agreements such as the Paris Agreement and the United Nations' Sustainable...

A deep dive into organic carbon distribution in hadal trenches

Hadal trenches are one of the ocean's most extreme and least studied regions. Hadal zones, which begin at depths of around 6,000 meters, were once thought to be "biological deserts," but over time they have been shown to be teeming with life. However, the distribution and source of organic carbon in hadal sediments are still not well understood.

Gender stereotypes still hold true for youth and types of political participation

Gender roles absorbed at an early age seem to have shaped today's youth regarding their involvement in politics, in line with traditional stereotypes, concludes a new study, conducted amongst adolescents and young adults aged between 15 and 30 in Italy, within the Horizon 2020 project, CATCH-EyoU: Processes in Youth's Construction of Active EU Citizenship.

New take on machine learning helps us 'scale up' phase transitions

Researchers from Tokyo Metropolitan University have enhanced "super-resolution" machine learning techniques to study phase transitions. They identified key features of how large arrays of interacting particles behave at different temperatures by simulating tiny arrays before using a convolutional neural network to generate a good estimate of what a larger array would look like using correlation...

India Covid variant spreading across England, data shows

Scientists say geographical spread ‘entirely predictable’ and window of opportunity has been missedCoronavirus – latest updatesSee all our coronavirus coverageThe coronavirus variant of concern first detected in India is continuing to spread across England, with cases emerging beyond “hotspot” areas, data suggests.The variant, known as B.1.617.2, is thought to be driving a rise in Covid...

End of England Covid lockdown on 21 June increasingly in doubt

Date for lifting remaining curbs may be moved amid warnings of third wave driven by India variantCoronavirus – latest updatesSee all our coronavirus coverageThe 21 June target for scrapping England’s remaining coronavirus restrictions appears increasingly under threat, as a senior government adviser said the country was in the early stages of a third wave.Prof Ravi Gupta, a member of the New...

Can you solve it? Gods of snooker

Your turn to break offMy cultural highlight of recent weeks has been the brilliant BBC documentary Gods of Snooker, about the time in the 1980s when the sport was a national obsession. Today’s puzzle describes a shot to malfunction the Romford Robot (above left) and put the Whirlwind (above right) in a spin.Baize theorem Continue...

Louisiana coast still hurting from storms, bracing for more

Scores of people in coastal Louisiana are still living in campers on dirt mounds or next to cement slabs where their houses once stood. Unresolved insurance claims and a shortage of supply and labor are stymieing building efforts. And weather forecasters are warning of more possible devastation to come.

Young Arabic speakers offered kid-friendly route into scientific discovery

Arabic speakers worldwide can now access a library of kid-friendly scientific articles thanks to a newly launched educational resource. Penned by leading scientists and published in Arabic by scholarly publisher Frontiers, the online learning resource includes a collection of fascinating scientific articles designed to inspire the next generation of young scientists. Ranging from galactic...

Starwatch: track down the large but overlooked Boötes, the herdsman

Stars in this constellation were mentioned by the ancient Babylonians and later by PtolemyThis week it’s time to track down a large but easily overlooked constellation. Boötes, the herdsman, is an ancient constellation that was catalogued by the Greek astronomer Ptolemy in the second century. References to the stars in this constellation date back even further, however, to the ancient...

A fungus is major cause of death among people with HIV in the Brazilian Amazon

A series of autopsies performed in an infectious disease hospital in the Brazilian Amazon reveals that infections by the Histoplasma fungus are a major cause of death in people with HIV. The study, led by Barcelona Institute for Global Health (ISGlobal), an institution supported by "la Caixa" Foundation, in collaboration with a team in Manaus, highlights the need of implementing sensitive methods...