2026年9月25日星期五
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Meridian Globe
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Science

航天、生命科学与气候研究进展

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This week’s new questions

If every ship on the planet were hauled out of the water, how much would global sea levels change, and how quickly? How different would Earth be if anaerobic l…

ScienceAmericas

NASA Watches Earth’s Weight, Finds Center of Mass

Seasonal changes redistribute enough water around Earth to shift the planet’s center of mass back and forth by fractions of an inch relative to its geometric c…

ScienceAmericas

Indonesia’s Anak Krakatau

Anak Krakatau erupts ash and volcanic gases in this Sept. 5, 2026, image acquired with the OLI (Operational Land Imager) on Landsat 8. Eruptions are a regular…

ScienceAmericas

NASA Astronaut Reid Wiseman to Join NFL Fans in Baltimore

As part of NASA’s new Inspiration Tour, Reid Wiseman, NASA astronaut and commander of the agency’s Artemis II mission, will highlight America’s strengths in sp…

ScienceAmericas

NASA’s Integrated Medical Model (IMM)

Planning crewed missions to the Moon and Mars involves preparing for the medical realities of long-duration space travel. Factors like cosmic radiation, microg…

ScienceAmericas

Building the materials foundation for AI

The AI boom is becoming a materials challenge. As AI pushes computing into new territory, the materials behind that infrastructure are becoming just as crucial…

ScienceAmericas

Venus may have swallowed its own moon

Venus may have once had a moon, but new research suggests the planet’s incredibly slow rotation could have doomed it. Computer simulations showed that instead…

ScienceEurope

Faster-flowing glaciers fuel decades of polar ice loss

The longest satellite data record of ice-sheet change ever assembled has revealed that Greenland and Antarctica have lost a staggering 11 trillion tonnes of ic…

ScienceEurope

Purple swirls on the Red Planet

This image shows a prominent ice cliff near Mars’s south pole. With striking swirls of purple, pink and red, it’s a far cry from the colour palette we usually…

ScienceAmericas

APOD: 2026 September 16 – Webb’s View of M64

APODScienceAPODAPOD: 2026 September 16 –…Today’s APODArchiveSubmissionsIndexSearchCalendarRSSEducationAboutDiscuss APOD Astronomy Picture of the Day Discover t…

ScienceGlobal

Little red whats?

Little red whats?

ScienceAmericas

NASA Ames Stars of the Month: September 2026

The NASA Ames Science Directorate recognizes the outstanding contributions of (pictured left to right) Steve Ormsby, Aphrodite Kostakis, Alejando Borlaff, Sara…

ScienceAmericas

What even is an AI kill switch?

<p>Amid renewed calls to slow frontier AI, experts are considering what an emergency stop would entail&mdash;and who would decide when to use it</p>

ScienceAmericas

How pizza can solve this unusual math puzzle

<p>Moser&rsquo;s circle problem can be used to divide a pizza into one, two, four, eight, 16 or 31 slices. It&rsquo;s a perfect example of how the numbers in a…

ScienceAmericas

Roundtables: Could AI really kill us all?

Listen to the session or watch below Employees at the world&#8217;s leading AI labs are saying there&#8217;s a real possibility that advanced AI could destroy…

ScienceAmericas

The U.S. has weapons in space

<p>A high-ranking official announced yesterday that the U.S. military has deployed weapons into orbit to counter threats from Russia and China</p>

ScienceAmericas

Which million-dollar math problem could AI solve next?

<p>After an OpenAI model presented a possible solution to the Navier-Stokes problem, mathematicians are speculating about which major unsolved question could b…

ScienceAmericas

This Australian cave hid 25,000 years of ritual secrets

Microscopic plant remains are revealing how GunaiKurnai ancestors used Cloggs Cave for ritual practices over thousands of years. People deliberately gathered w…

ScienceEurope

Webb reveals stunning panorama of star formation

This starry view of the nearby star-forming region IC 348 is one of the largest images from the NASA/ESA/CSA James Webb Space Telescope released to the public…

ScienceAmericas

What&#8217;s at stake in AI’s trillion-dollar gamble

When Jessica Wachter, a finance professor at the University of Pennsylvania’s Wharton School, wanted to assess AI’s impact on the economy over the next few yea…

ScienceAmericas

Will we ever know how life began?

<p>Scientists disagree on how biology got started and on whether we can ever know for sure</p>

ScienceAmericas

Finding meaning in the impossible

<p>Some questions may never be answered, but maybe that&rsquo;s not the point</p>

ScienceAmericas

Can humans live forever?

<p>Scientists are pursuing the limits of longevity</p>

ScienceAmericas

Science crossword: Broken thoughts

<p>Play this crossword inspired by the October 2026 issue of<i> Scientific American</i></p>

ScienceAmericas

Are darker egg yolks really healthier?

<p>Deep-orange yolks could have a slight health benefit, but it&rsquo;s easy for producers to fake it</p>

ScienceAmericas

What if we never find dark matter?

<p>Could the hunt for the universe&rsquo;s missing matter be the biggest wild goose chase in scientific history?</p>

ScienceAmericas

In This Issue

Proceedings of the National Academy of Sciences, Volume 123, Issue 37, September 2026. <br/>

ScienceEurope

FLEX and Sentinel-3C launch highlights

Video: 00:03:22 ESA’s state-of-the-art FLEX Earth Explorer satellite and the Copernicus Sentinel-3C satellite have been launched together aboard a Vega-C rocke…

ScienceEurope

FLEX and Sentinel-3C launched

The European Space Agency’s FLEX Earth Explorer satellite and the Copernicus Sentinel-3C satellite have been launched together aboard a Vega-C rocket from Euro…

ScienceAmericas

The AI industry has taken a doomer turn. What now?

This story appeared in The Algorithm, our weekly newsletter on AI. To get stories like this in your inbox first,&#160;sign up here. This weekend, Dario Amodei,…

ScienceAmericas

Donated livers can be made biologically younger

Once an organ is removed from a donor’s body, the clock starts ticking. Surgeons usually flush the organ with a preservative solution, bag it, and put it on ic…

ScienceAmericas

AI agents blew the whistle on their cheating colleagues

A group of AI agents asked to solve a series of math problems split into rival factions—when some cheated, others tried to stop them. That whistleblowing behav…

ScienceAmericas

Is there a hidden 'Planet 9' in our solar system?

For more than a century, astronomers have been captivated by the idea that an undiscovered planet could be lurking in the furthest reaches of our solar system.

ScienceEurope

ESA’s FLEX mission reveals the secret glow of plants

Video: 00:06:30 Plants may look still and silent, but every leaf is constantly responding to its environment. As plants photosynthesise, they emit an incredibl…

ScienceAmericas

Back-to-back Arctic storms can double sea ice loss

Scientists have found that Arctic cyclones become especially destructive when several strike one after another. These storm clusters cause about twice as much…

ScienceGlobal

Physicists can’t agree on how the Universe works

A massive worldwide survey of physicists has revealed surprisingly little agreement about some of the universe’s biggest mysteries. No majority backed the stan…

ScienceAmericas

The secret to longer life may be hidden in bat DNA

Long-lived bats appear to combine powerful immune defenses with unusual strategies for eliminating damaged cells, potentially helping them avoid cancer and dis…

ScienceEurope

Week in images: 07-11 Sep 2026

Week in images: 07-11 Sep 2026 Discover our week through the lens

ScienceAmericas

To sleep and dream: Unraveling narcolepsy

Proceedings of the National Academy of Sciences, Volume 123, Issue 37, September 2026. <br/>In an extraordinary convergence, Emmanuel Mignot and Masashi Yanagi…

ScienceEurope

Anak Krakatau eruption by Sentinel-3

Image: Copernicus Sentinel-3 captured a plume from the eruption of Anak Krakatau on Saturday, 5 September.

ScienceAmericas

Transthyretin can denature by an alternative pathway

Proceedings of the National Academy of Sciences, Volume 123, Issue 37, September 2026. <br/>SignificanceIt is surprising that transthyretin (TTR) has an aggreg…

ScienceGlobal

Little Red Dots 2026

Little Red Dots 2026

ScienceGlobal

On our bookshelf

On our bookshelf

ScienceGlobal

How the brain dances across critical boundaries

<p>by Audrey J. Sederberg</p> The brain’s functional connectivity dynamics have been explained by a critically tuned model, but such models miss occasional rec…

ScienceGlobal

The 100 Diatom Genomes Project

<p>by Thomas Mock, Gust Bilcke, Eliott Flaum, Shunan Fu, Lilian Hoch, Kevin Moog, Nadine Rijsdijk, Elizabeth C. Ruck, Ian W. Bishop, Carole Duchene, Reuben Gil…