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Physical World

Mining the deep ocean

Renewable technologies need a multitude of critical minerals. The seabed could supply these riches. But at what cost?

A light in the dark: Finding the good in the natural world

OPINION: Is it absurd to think that science can inform our values? Not at all, says writer KC Cole.

For particle physicists working with neutrinos, almost nothing is everything

Several massive multimillion dollar experiments should soon reveal more about the nature of these ghostly particles

The cataclysmic flood that wasn’t

Researchers have long believed that a sudden, massive deluge filled a dry, salt-filled Mediterranean some 5 million years ago. Turns out that probably didn't happen, but there was still drama aplenty.

Recreating the smells of history

Using chemistry, archival records and AI, scientists are reviving the aromas of old libraries, mummies and battlefields

Meet the mysterious electrides

These chemical oddities may explain why Earth seems to be deficient in certain elements — and could prove useful in catalysts and more

Top science stories of 2025

In a year of funding chaos, ongoing climate change and pollution perils, we also saw the most powerful telescope yet, personalized gene therapy, and the next-best-thing to an HIV vaccine — not to mention a brand-new color

When clouds flock together

Scientists are discovering that clumping clouds supercharge storms in surprising ways — driving heavy, deadly rainfall and flooding

AI is changing our understanding of earthquakes

Machine learning is expanding scientists’ catalogs of quakes and refining maps of underground faults. It also promises to improve quake forecasts.

Tracking down the hidden pollutants that make wildlife sick

A new technique for detecting unknown and unlooked-for chemicals is revealing dozens of contaminants in alligators, sea lions and condors

Shucking the past: Can oysters thrive again?

Dredging and pollution devastated the once-bountiful reefs. Careful science may help bring them back.

How a mysterious particle could explain the universe’s missing antimatter

The Big Bang should have produced equal amounts of matter and antimatter, which would have annihilated each other in a spectacular burst of pure energy. But it didn’t. New experiments focused on understanding the enigmatic neutrino may offer insights.

Watching the world, one quintillionth of a second at a time

An attosecond is no time at all for a person. Not so for electrons, atoms and molecules. Laser-wielding scientists are revealing the action.

The history of the ocean, as told by tiny beautiful fossils

Bountiful remains of foraminifera reveal how organisms responded to climate disturbances of the past. They can help predict the future, too.

At the dawn of life, did metabolism come first?

Some scientists propose that in the beginning, geochemistry gave way to biochemistry — with no genetic material necessary. Only later did RNA and DNA appear.

Pursuing the electrical fluid: How scientists discovered the electron

A celebration of 2025 as the International Year of Quantum Mechanics and Science would be remiss without a look at how the carrier of electricity finally yielded its secrets — paving the way to the quantum era

How did eastern North America form?

With many collisions and much crumpling of rock, down the ages. The story holds lessons for how the edges of continents are built and change over time.

Ghost rivers, hidden lakes: The long search for water on Mars

Martian lake beds and deltas reveal the Red Planet’s watery past. But many puzzles remain, scientist Bruce Jakosky says.

Moon rocks reveal hidden lunar history

As NASA astronauts aim for landings in 2027, geologists find surprises in recently retrieved samples from the far side

When everything in the universe changed

The revolutionary James Webb Space Telescope and next-gen radio telescopes are probing what’s known as the epoch of reionization. It holds clues to the first stars and galaxies, and perhaps the nature of dark matter.

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