865,372 articles

Falling Space Debris is a Bigger Menace Than Ever

History remembers October 4, 1957, a lot better than it remembers January 4, 1958—though in recent weeks, the second date is coming to loom larger than the first. October 4, 1957, was the day the Soviet Union Launched Sputnik—the world’s first satellite—an achievement that heralded the start of the space age. “RUSS SATELLITE CIRCLING EARTH,” shouted the Los...

No trace of Nathan: the desperate family waiting for news of a missing brother

When Nathan Brosnan went missing his family was plunged into the agony of ‘not knowing’. A national DNA program is trying to give families like theirs answersGet our free news app, morning email briefing and daily news podcastIn a life punctuated by cycles of chaos, there was always one thing 35-year-old Nathan Brosnan kept constant. “It didn’t matter if he was having a mental health...

The many ways nature nurtures human well-being

A systematic review of 301 academic articles on 'cultural ecosystem services' has enabled researchers to identify how these nonmaterial contributions from nature are linked to and significantly affect human well-being. They identified 227 unique pathways through which human interaction with nature positively or negatively affects well-being. These were then used to isolate 16 distinct underlying...

Dual-plasmid editing system improves DNA digital storage potential

DNA-based information is a new interdisciplinary field linking information technology and biotechnology. The field hopes to meet the enormous need for long-term data storage by using DNA as an information storage medium. Despite DNA's promise of strong stability, high storage density and low maintenance cost, however, researchers face problems accurately rewriting digital information encoded in...

The many ways nature nurtures human well-being

A systematic review of 301 academic articles on "cultural ecosystem services" has enabled researchers to identify how these nonmaterial contributions from nature are linked to and significantly affect human well-being. They identified 227 unique pathways through which human interaction with nature positively or negatively affects well-being. These were then used to isolate 16 distinct underlying...

New research on the emergence of the first complex cells challenges orthodoxy

In the beginning, there was boredom. Following the emergence of cellular life on earth, some 3.5 billion years ago, simple cells lacking a nucleus and other detailed internal structure dominated the planet. Matters would remain largely unchanged in terms of evolutionary development in these so-called prokaryotic cells—the bacteria and archaea—for another billion and a half years.

New at-home, saliva-based COVID test as effective as PCR in preliminary analysis

PCR tests, also called molecular tests or nucleic acid tests, are considered the gold standard in detecting the presence of SARS-CoV-2, the virus that gives rise to COVID-19. However, they can take a few days to process, resulting in unnecessary quarantine for negative individuals or delays for those who require proof of negative testing for travel or other commitments. Rapid antigen-detecting...

'Shouting distance': That's how close the Inflation Reduction Act would get US to its climate goals

Fires, heat waves, floods—the reality of climate change is front and center for millions of Americans. Yet among the downbeat of climate-related disasters, some hopeful news rang out last week with Democrats' surprise announcement of a bill designed to help the country meet its goals of curbing greenhouse gas emissions enough to help the planet avoid the worst projections of global warming.

'Simple yet powerful': Seeing cell secretion like never before

We have recently witnessed the stunning images of distant galaxies revealed by the James Webb telescope, which were previously visible only as blurry spots. Washington University in St. Louis researchers have developed a novel method for visualizing the proteins secreted by cells with stunning resolution, making it the James Webb version for visualizing single cell protein secretion.

Hubble gazes at a star-studded skyfield

This star-studded image from the NASA/ESA Hubble Space Telescope shows the heart of the globular cluster NGC 6638 in the constellation Sagittarius. The star-strewn observation highlights the density of stars at the heart of globular clusters, which are stable, tightly bound groups of tens of thousands to millions of stars. To capture the data in this image, Hubble used two of its cutting-edge...

NASA's ShadowCam launches aboard Korea Pathfinder Lunar Orbiter

NASA's ShadowCam is heading to the Moon aboard Korea Aerospace Research Institute (KARI)'s Korea Pathfinder Lunar Orbiter (KPLO) mission. KPLO, also known as Danuri, launched at 7:08 p.m. EDT on a SpaceX Falcon 9 from Launch Complex 40 on the Cape Canaveral Space Force Station in Florida on August 4.

Oregon's wildfire risk map emerges as new climate flashpoint

A new map in Oregon that rated the wildfire risk of every tax lot in the state—labeling nearly 80,000 structures as high-risk—generated so much pushback from angry homeowners that officials abruptly retracted it, saying they had not done enough local outreach before publicizing the ambitious project.

Machine learning reveals hidden components of X-ray pulses

Ultrafast pulses from X-ray lasers reveal how atoms move at timescales of a femtosecond. That's a quadrillionth of a second. However, measuring the properties of the pulses themselves is challenging. While determining a pulse's maximum strength, or 'amplitude,' is straightforward, the time at which the pulse reaches the maximum, or 'phase,' is often hidden. A new study trains neural networks to...