Watch the stars and from them learn. To the Master's honor all must turn, Each in its track, without a sound, Forever tracing Newton's ground

— Albert Einstein

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Updated: 9 hours 1 min ago

Most people with covid-19 are still infectious after five days

Thu, 08/18/2022 - 7:30pm
One quarter of people are still infectious seven days after symptoms begin, and lateral flow tests are less accurate at the beginning of the illness than at the end
Categories: Astronomy

Half of newly irrigated land is in water-stressed areas

Thu, 08/18/2022 - 6:10pm
Irrigating more land could help feed 1.4 billion people, but over half of new irrigation projects are in places that are already at risk of running dry
Categories: Astronomy

Water droplets can sometimes turn into bleach when hitting a surface

Thu, 08/18/2022 - 5:00pm
Some researchers have seen an unusual effect where microscopic water drops turn into hydrogen peroxide after hitting a surface. A series of experiments is now getting closer to uncovering why it might happen
Categories: Astronomy

Genetic tweaks to upgrade photosynthesis boost soy yield by a fifth

Thu, 08/18/2022 - 3:00pm
Researchers have succeeded in making photosynthesis more efficient in soybean plants, in a major breakthrough that will mean less forest has to be cut down to make way for farms
Categories: Astronomy

Google's quantum supremacy challenged by ordinary computers, for now

Thu, 08/18/2022 - 1:00pm
In 2019, Google showed that its Sycamore quantum computer could solve a problem that no ordinary computer could handle - but now a new algorithm gives non-quantum devices the edge
Categories: Astronomy

UK polecats numbers are rising as they interbreed with ferrets

Thu, 08/18/2022 - 12:18pm
The population of polecats in Britain has recovered over the past century and may be aided by interbreeding with feral ferrets
Categories: Astronomy

UK polecat numbers may be rising due to interbreeding with ferrets

Thu, 08/18/2022 - 12:18pm
The population of polecats in Britain has recovered over the past century and it may be in part due to interbreeding with feral ferrets
Categories: Astronomy

Mosquitoes have more ways to smell us than we thought

Thu, 08/18/2022 - 12:00pm
Female mosquitoes that had their human-scent receptors blocked could still smell people. The finding suggests the insects have a more elaborate olfactory system than was previously known
Categories: Astronomy

Colombian dinosaur finally identified thanks to 2016 peace agreement

Thu, 08/18/2022 - 10:55am
A peace agreement in Colombia meant researchers could return to the site where a sauropod fossil was dug up in 1943 and name it as a new species, Perijasaurus lapaz
Categories: Astronomy

Covid-19 linked to higher risk of brain conditions up to two years on

Thu, 08/18/2022 - 8:54am
The risk of being diagnosed with a neurological or psychiatric condition up to two years after catching covid-19 may be higher than with other respiratory infections, such as seasonal influenza
Categories: Astronomy

More than one in eight Reddit users publish toxic posts

Thu, 08/18/2022 - 8:00am
An analysis of 1.2 million Reddit users found that around 16 per cent of people wrote toxic posts and 13 per cent wrote toxic comments, such as direct insults
Categories: Astronomy

The star Betelgeuse has stopped dimming – but it's still acting weird

Wed, 08/17/2022 - 6:00pm
After a weird event dubbed the Great Dimming in 2019, the plasma that makes up Betelgeuse is sloshing around inside the star, erasing pulsations that have been measured for centuries
Categories: Astronomy

Video calls improved cognition in older people at risk of Alzheimer’s

Wed, 08/17/2022 - 5:25pm
For socially isolated older people with mild cognitive impairment, 30-minute video calls four times a week improved cognition, happiness and brain connectivity
Categories: Astronomy

Chewing can increase your body's energy use by up to 15 per cent

Wed, 08/17/2022 - 3:00pm
Researchers used a plastic dome placed over people's heads to measure how much energy they expended chewing gum versus sitting idly. They found chewing gum uses a significant amount of energy
Categories: Astronomy

Ancient megalodon shark could eat a whale in just a few bites

Wed, 08/17/2022 - 3:00pm
The first 3D reconstruction of a huge, ancient shark called megalodon suggests it was even bigger than previously thought
Categories: Astronomy

A second asteroid may have struck Earth when the dinosaurs died out

Wed, 08/17/2022 - 3:00pm
A possible impact crater under the sea off West Africa might have been made by a smaller piece that broke off the asteroid that wiped out most dinosaurs
Categories: Astronomy

Amazing Bed of Rosettes photo captures beauty of dementia research

Wed, 08/17/2022 - 2:00pm
An incredible view of biological research has won the Alzheimer's Society's new competition, with a photo by Charlie Arber that shows a group of "blue" stem cells as they start to turn into "green" brain cell
Categories: Astronomy

Scent review: How fragrant plants weave their magic

Wed, 08/17/2022 - 2:00pm
From frankincense to cacao and vanilla, Scent: A natural history of fragrance shows how aromatic substances have helped shape human culture
Categories: Astronomy

What hackers get up to when left on an island in the Pacific

Wed, 08/17/2022 - 2:00pm
Campsite coding Deerpunk costumes, tacos delivered by drones and a game called "Beerocracy" featured at this year's ToorCamp for hackers – it was a blast, writes Annalee Newitz
Categories: Astronomy

Did Mayan game use ashes of dead rulers to make the balls?

Wed, 08/17/2022 - 2:00pm
Feedback is our weekly column of bizarre stories, implausible advertising claims, confusing instructions and more
Categories: Astronomy