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'Dragon Man'
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an image of a grid of numbers against a blue background, with prime numbers highlighted

Mathematicians discover a completely new way to find prime numbers

Rachel Crowell published 19 June 25

Using a notion called integer partitions, mathematicians have discovered a new way to detect prime numbers while also connecting two areas of math in an unexpected way

an illustration of a head composed of nested, colorful outlines in a psychedelic style

Ketamine may treat depression by 'flattening the brain's hierarchies,' small study suggests

Jane Palmer published 19 June 25

Ketamine leads to increased communication between areas of the brain that don't typically engage with each other, new research suggests.

An archaeologist pieces together fragments of a fresco laid out on a table.

'World's most difficult jigsaw puzzle': Archaeologists piece together thousands of shattered fresco blocks from ancient Roman villa

Perri Thaler published 19 June 25

Archaeologists found thousands of pieces of an ancient Roman painting, which features intricate designs and ancient graffiti.

Mars (top) and Regulus (bottom), side by side in the night sky

Mars cozies up to one of the brightest stars in the sky in 'mind-blowing' conjunction photo

Harry Baker published 19 June 25

A superbright Mars is currently visible alongside Regulus, the "Heart of the Lion" star located around 79 light-years from Earth.

A bird's-eye view of an excavation team digging in soil.

Viking Age burial of chieftain with 'enormous power' found in Denmark — and he may have served Harald Bluetooth

Perri Thaler published 19 June 25

Archaeologists were surprised to find 30 Viking Age burials in Denmark, and even more surprised by the extravagant grave goods found within them.

An illustration of a rainbow-colored whirlpool in space

'A bundle of microscopic tornadoes' may be building the cosmic web

Andrey Feldman published 19 June 25

When invisible dark matter spins, it may form clumps of "vortexes" that stretch across space, forming the cosmic web that links all galaxies, new research proposes.

SpaceX's Ship 36 exploded into a giant fireball during a routine test on June 18. — SpaceX's Starship explodes on Texas launch pad in 'catastrophic failure' during routine test SpaceX's Starship 36 underwent a "catastrophic failure" on the stand at its Texas launch site, but the latest setback is unlikely to dent the company's ambitions.

a computer generated image of interlocking hexagonal rooms with different natural environments inside — 'Huge surprise' reveals how some humans left Africa 50,000 years ago How did Homo sapiens manage to leave Africa around 50,000 years ago, when earlier treks out of the continent had ended in failure?

A stargazer stood on a rock with the night sky in the background — 'New star' becomes visible over North America The never-before-seen "nova," dubbed V462 Lupi, recently appeared in the constellation Lupus, after suddenly becoming 4 million times brighter. The shining explosion is visible to the naked eye and can be seen from parts of North America.

Aerial view of a dry river in Nevada, near Colorado River and Grand Canyon, USA. — Ancient groundwater records reveal worrying forecast for US Southwest Groundwater records from the last ice age indicate that aquifers in the U.S. Southwest are more sensitive to global warming than aquifers in the Pacific Northwest.

A robot holding a power plant above its head. — Advanced AI reasoning models generate up to 50 times more carbon dioxide than common LLMs Asking AI reasoning models questions in areas such as algebra or philosophy caused carbon dioxide emissions to spike significantly.

Reconstruction of Homo longi (Denisovan) — Ancient 'Dragon Man' skull from China isn't what we thought Scientists have determined that a giant skull from an ancient human relative named the "Dragon Man" is actually Denisovan.

a photo of human footprints in the sand — Evidence is building that people were in the Americas 23,000 years ago A new analysis of the ancient human footprints at White Sands National Park in New Mexico offers more evidence that they are around 23,000 years old.

Planet Earth

In 2025, Tornado Alley has become almost everything east of the Rockies — and it's been a violent year

By Daniel Chavas published 19 June 25

Opinion A storm scientist explains what's been driving deadly tornado outbreaks and how tornado season has been changing.

A giant ash plume from Mount Lewoboti Laki-laki in Indonesia. The ash appears orange.

Indonesia's Lewotobi Laki-laki volcano erupts twice in 2 days, unleashing 6-mile-high ash cloud

By Sascha Pare published 18 June 25

Mount Lewotobi Laki-laki erupted on Tuesday and Wednesday, unleashing gigantic ash plumes and showering villages with volcanic debris.

LATEST ARTICLES

1
Mathematicians discover a completely new way to find prime numbers
2
Ketamine may treat depression by 'flattening the brain's hierarchies,' small study suggests
3
'World's most difficult jigsaw puzzle': Archaeologists piece together thousands of shattered fresco blocks from ancient Roman villa
4
Mars cozies up to one of the brightest stars in the sky in 'mind-blowing' conjunction photo
5
Viking Age burial of chieftain with 'enormous power' found in Denmark — and he may have served Harald Bluetooth

Space

Is Mars really red? A physicist explains the truth.

By David Joffe published 19 June 25

Mars isn't a bright, fire-engine red, but the iron oxide in its rocks makes it appear redder than other planets, especially from afar.

How to see the first images from the Vera C. Rubin Observatory on Monday

By Perri Thaler published 18 June 25

The Vera C. Rubin Observatory will share its first highly-detailed images of the sky on Monday. Find details about how to see them here.

archaeology

Large bust of Ramesses II in a public museum.

How did Ramesses II die — and did his more than 100 children fight for the throne?

By Owen Jarus published 19 June 25

Ramesses II was around 90 years old when he died, an astonishing age for ancient Egypt.

Ancient Egyptians

Viking Age woman was buried with her dog in an elaborate 'boat grave,' excavations reveal

By Tom Metcalfe published 17 June 25

Researchers think the Viking Age boat burial of a woman and her pooch in Norway dates to between A.D. 900 and 950.

World of science

Health

a close-up of white pills printed with the words "Tylenol 500"

Scientists finally work out how Tylenol works — 130 years after we started using it

By Clarissa Brincat published 19 June 25

According to a new study in rats, a key byproduct of acetaminophen, called AM404, may block pain at the source before it has a chance to reach the brain.

Our expert reviewer testing the workout features on the Garmin Fenix 8 smartwatch

Best fitness trackers 2025: Measure steps, sleep, exercise performance and more

By Andrew Williams, Anna Gora last updated 19 June 25

Buying Guide These are the best fitness trackers you can buy in every category, from Amazfit Balance and Garmin Fenix 8 to TicWatch Atlas.

The brain might have a hidden 'off switch' for binge drinking

By Marianne Guenot published 18 June 25

Flipping the switch on fewer than 500 neurons dramatically reduces the alcohol consumption of mice. This novel finding could lead to new targets for therapeutics.

Animals

Crows: Facts about the clever birds that live all over the world

By Marilyn Perkins, Alina Bradford last updated 18 June 25

Discover interesting facts about how crows remember faces, mimic human speech and more.

'Statistically, that shouldn’t have happened': Something very weird occurred in the ocean after the dinosaur-killing asteroid hit

By Stewart Edie published 15 June 25

Not everything dies in a mass extinction. Sea life recovered in different and surprising ways after the asteroid strike 66 million years ago. Ancient fossils recorded it all.

Extinct species

How do migrating birds know where they're going?

By Marilyn Perkins published 15 June 25

To navigate the skies, birds rely on a complex sensory tool kit.

Human Behavior

Strikingly simple 'dial' in the brain may help it distinguish imagination from reality

By Payal Dhar published 12 June 25

Activity levels in a specific region of the brain predict whether we think something is real, irrespective of whether we've seen it or imagined it.

People's mental health often improves after weight-loss surgery. A study pinpoints the real reason why.

By Marianne Guenot published 10 June 25

Feeling less stigma — not losing weight — was linked to better mental health and eating behaviors after bariatric surgery.

Young couple practicing yoga in a summer park.

Your moral compass is tied to how in tune you are with your body, study hints

By Skyler Ware published 28 May 25

A recent study draws a connection between people's bodily awareness and how they find solutions to moral dilemmas.

Physics & Mathematics

Bizarre radio signals that defy physics detected under Antarctica

By Perri Thaler published 18 June 25

Researchers detected mysterious radio waves in Antarctica that seem to defy the rules of particle physics. Now they're searching for a cause.

Particle Physics

'Alien's language' problem that stumped mathematicians for decades may finally be close to a solution

By Joanna Thompson published 4 June 25

The Inter-universal Teichmüller Theory, an infamous proof that has confounded mathematicians for over a decade, has been partially solved.

'Neutron lifetime puzzle' may have a new solution

By Andrey Feldman published 31 May 25

A type of hydrogen that doesn't interact with light could explain how long neutrons live and reveal the identity of the universe's dark matter, according to a new theory.

Physics & Mathematics

Chemistry

A cross-section of the new copper alloy, with the orange dots representing copper atoms, the yellow tantalum atoms, and the blue lithium atoms.

Scientists create ultra-tough copper alloy that is stronger than steel and can withstand temperatures of 1500 F

By Ben Turner published 23 April 25

The new super-strong copper alloy can be used to build better airplanes and spacecraft.

a deer's breath is visible in the cold air

Why does nearly all life breathe oxygen?

By Harrison Tasoff published 30 March 25

Nitrogen comprises around 78% of Earth's atmosphere, so why do most lifeforms breathe oxygen?

Plastic waste by the ocean

Scientists break down cheap plastic using the air — and turn it into something far more valuable

By Ben Turner published 22 March 25

Scientists developed a new method for breaking down one of the most common plastics to a byproduct that can be upcycled into more valuable materials.

Technology

boy photographing a flower and butterfly in a field

Best macro lenses 2025: Get close to nature with incredible detail

By Kimberley Lane published 18 June 25

The best macro lenses for capturing the tiny world ahead of Prime Day on July 8-11 — including Sony, Nikon, Canon and more.

China pits rival humanoids against each other in world's first 'robot boxing tournament'

By Rory Bathgate published 18 June 25

Unitree's combat robots can punch and kick while keeping their balance, but they are controlled by humans — for now.

The best thermal binoculars

Best thermal binoculars: Observe nocturnal wildlife after dark

By Matt Morris published 17 June 25

We've rounded up the best thermal imaging binoculars ahead of Prime Day that enable you to see wildlife and humans in the dark.

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