2,526 articles mezi dny 1.7.2020 a 31.7.2020

Coronavirus live news: India Covid-19 cases top 900,000 as 133m re-enter lockdown

Restrictions imposed on Indian city of Bangalore and state of Bihar; Venezuela’s capital Caracas to go into a strict lockdown on Wednesday; Face masks mandatory in France; Follow the latest updatesCities worldwide reimpose lockdowns as Covid-19 cases surgeFrance: baby boy infected with coronavirus in wombDoes coronavirus spread in the air and how do we stay safe?Revealed: the inside story of...

Increase in invasive species poses dramatic threat to biodiversity – report

Tourism, transport and the climate crisis found to be major drivers of rise in alien plants and animals, which can decimate ecosystemsAn increase in the spread of non-native plant and animals species around the world could lead to dramatic biodiversity loss, a new study has found, causing permanent damage to ecosystems as they are pushed past biological tipping points.The study, published in...

Competitive hotdog eaters nearing limit of human performance

A maximum of 84 hotdogs in 10 minutes is possible, says sports science studyThe four-minute mile and the two-hour marathon were once believed impossible: now a new gauntlet has been thrown down for the world of elite competition. A scientific analysis suggests competitive eaters have come within nine hotdogs of the limits of human performance.The theoretical ceiling has been set at 84 hotdogs in...

Big three London museums to reopen in August

People will have to book to visit V&A, Science Museum and Natural History MuseumCoronavirus – latest updatesSee all our coronavirus coverageThe V&A, the Science Museum and the Natural History Museum have announced plans to have a staggered reopening in which they anticipate 80% fewer visitors.The three museums, all neighbours in South Kensington, will reopen on different days in August...

A Decade of Sun

As of June 2020, NASA’s Solar Dynamics Observatory — SDO — has now been watching the Sun non-stop for over a full decade. From its orbit in space around the Earth, SDO has gathered 425 million high-resolution images of the Sun, amassing 20 million gigabytes of data over the past 10 years. This information has enabled countless new discoveries about the workings of our closest star and...

July 15! 2020 Goddard Summer Film Fest

The Goddard Office of Communications hosts a virtual showcase of their latest productions at the eleventh annual Goddard Film Festival, highlighting the center’s achievements over the past year in astrophysics, Earth science, heliophysics and planetary science. The videos showcases recent and upcoming missions and events such as the James Webb Space Telescope, Operation IceBridge, Landsat,...

Livestock farming and fossil fuels could drive 4C global heat rise

Human activity behind half atmosphere’s load of methane, a gas 28 times more powerful than CO2 at trapping heatAnimal farming and fossil fuels have driven global emissions of the potent greenhouse gas methane to the highest level on record, putting the world on track for dangerously increased heat levels of 3C to 4C.Since 2000 discharges of the odourless, colourless gas have risen by more than...


TUESDAY 14. JULY 2020


‘Disk Detective’ Needs Your Help Finding Disks Where Planets Form

Eyebrow: Citizen Science NewsBody: Planets form from gas and dust particles swirling around baby stars in enormous spinning disks. But because this process takes millions of years, scientists can only learn about these disks by finding and studying a lot of different examples. Through a project called Disk Detective, you can help.Link: Learn...

Biden steps up his clean-energy plan, in a nod to climate activists

Joe Biden has raised the ambitions of his climate plan, in a clear sign his campaign is responding to demands for greater action among the progressive flank of his party. In a speech on Tuesday, the presumptive Democratic nominee for president announced proposals to spend $2 trillion on clean-energy projects and eliminate carbon emissions from the electricity sector by 2035, stepping up his...

Could the willow help us fight cancer?

An ingredient in its bark led to aspirin, now researchers are looking into the properties of another compound in the treeWillow trees are a pharmaceutical treasure trove. The ancient Egyptians used its bark for relieving pain, inflammation and fevers, and science has since shown these medical powers came from an ingredient called salicin, named after salix, the Latin name for the tree. That...

The plight of the Kalahari San

Over the past few decades, San (Bushmen) communities in southern Africa, former hunter-gatherers, have developed new adaptive strategies to cope with climate change, the presence of other groups on their land, and the impacts of globalization. While San have likely lived in southern Africa for 20,000 to 40,000 years, they remain politically and economically marginalized in relation to other social...

A biologist and a historian are looking for art to trace fruit and vegetable evolution

Plant geneticists seeking to understand the history of the plants we eat can decode the genomes of ancient crops from rare, well-preserved samples. However, this approach leaves significant gaps in the timelines of where and when many modern-day fruits, vegetables, and cereal crops evolved, and paints an incomplete picture of what they looked like. A Science & Society article publishing July 14th...

Scientists achieve first complete assembly of human X chromosome

Although the current human reference genome is the most accurate and complete vertebrate genome ever produced, there are still gaps in the DNA sequence, even after two decades of improvements. Now, for the first time, scientists have determined the complete sequence of a human chromosome from one end to the other ('telomere to telomere') with no gaps and an unprecedented level of accuracy.

Ancient oyster shells provide historical insights

An interdisciplinary team of scientists studying thousands of oyster shells along the Georgia coast, some as old as 4,500 years, has published new insights into how Native Americans sustained oyster harvests for thousands of years, observations that may lead to better management practices of oyster reefs today.

Innovative catalytic reaction for low-cost synthesis of aromatic esters

Aromatic esters are chemicals that contain an aromatic ring consisting of functional groups called esters. These organic compounds are widely used as chemical feedstock in industries like food and beverages, pharmaceuticals, and cosmetics. Thus, finding efficient reactions for their synthesis is an important area of research in organic chemistry.

For chimpanzees, salt and pepper hair not a marker of old age

Silver strands and graying hair is a sign of aging in humans, but things aren't so simple for our closest ape relatives—the chimpanzee. A new study published today in the journal PLOS ONE by researchers at the George Washington University found graying hair is not indicative of a chimpanzee's age.

What determines a warbler's colors?

A new study has narrowed down the region of the genome that drives the black color in throat and face of warblers by studying the hybrid offspring produced when two species mate. The hybrids of golden-winged and blue-winged warblers have a mix of coloration from the parent species, which allows researchers to identify which regions of the genome are associated with which color patterns. The study,...

Physicists introduce novel mechanism for electron optics in solid-​state systems

Electrons can interfere in the same manner as water, acoustical or light waves do. When exploited in solid-state materials, such effects promise novel functionality for electronic devices, in which elements such as interferometers, lenses or collimators could be integrated for controlling electrons at the scale of mirco- and nanometres. However, so far such effects have been demonstrated mainly in...