Researchers may have uncovered the reason why some of Earth's earliest animals were commonly preserved as fossils—even though they were essentially fragile "bags of goo"—while later soft-bodied creatu...

University of Massachusetts Amherst's Jeff Podos and his former graduate student João C.T. Menezes have identified two contenders for the title of world's loudest bird: the bare-throated bellbird and ...

Ancient Chinese authorities used many creative ways to punish people, often with methods designed to mark them for life. One brutal example mentioned repeatedly in historical texts is cutting off a pe...

Antarctic krill are tiny shrimp-like creatures that were previously thought to mostly inhabit the upper layer of the Southern Ocean. Although they had occasionally been observed at deeper levels, they...

A Stanford team has documented the first direct observation of quantum jumps of sound in a mechanical resonator, completing an arc of scientific exploration that started more than 100 years ago.

研究者情報研究者名甲斐 歳恵

Scientists and practitioners are aggressively moving to deploy digital twins—large language model (LLM)-based models of individuals—across social science and policy research. We conducted 19 preregist...

On Nov. 11, 2025, Earth experienced a severe geomagnetic storm triggered by solar flares and coronal mass ejections from an active sunspot region. While this kind of storm brings beautiful auroras adm...

In 2022, excavations at a cemetery in Pień, Poland, led by researchers from the Institute of Archaeology at Nicolaus Copernicus University, led to a mysterious discovery. In what they call Grave 75, t...

More than 6,500 years ago, someone carefully drilled a hole in a human tooth, strung it on a cord and likely used it as a necklace. Found during field surveys at the Vinča cultural site of Jablanica i...

Since dark matter is only known to have gravitational interactions, it may plausibly decay to gravitons on cosmological timescales. Although such a scenario can be easily realized, there are currently...

2026年7月20日、ハーバード大学の数学研究者レヴェント・アルプーゲ博士がXことツイッターに「ヤコビアン予想の反例」を投稿しました。世界の数学研究者に衝撃が走りました。(1/6)

Discovery of a previously unknown multicomponent alloy formed during the 1945 Hiroshima atomic explosion.

For more than a century, astronomers have puzzled over a strange discrepancy in the historical record. Theta Eridani, a modest star in the constellation Eridanus, is the third-brightest star in its co...

Seen from the air, Channel Country resembles a vibrant, vast tapestry, with a network of waterways crisscrossing the land. Spread across more than 280,000 square kilometers (108,000 square miles) in o...

Devonian amber pushes plant resin origin back 65 million years.

Experiments show how so-called natural killer cells adjust their dynamics depending on whether they face cancerous or healthy cells.

スーパーカミオカンデ国際共同研究グループは、約5000日分の観測データの詳細解析により、超新星背景ニュートリノの兆候（2.6σ、99.5%信頼水準）を世界で初めて捉えました。

Scientists have extracted and analyzed the first-ever ancient proteins from the fossils of Homo naledi, revealing a potential all-female burial site. The study, published in the journal Cell, raises t...

We report an extraordinary observation of ground motion in Japan after the moment magnitude (MW) 9.0 2011 Tohoku-Oki earthquake attributed to a multiplate-interface slip event triggered by shear wave ...

This cohort study investigates the association of newborn sex with parental acceptance of vitamin K prophylaxis and hepatitis B vaccine in the US.

Could Earth have seeded Jupiter's moon Europa with bacterial life, where it could have taken hold in Europa's ocean and perhaps evolved into something more? That's the hypothesis of a new paper in the...

Researchers in Spain and Japan tested a broad range of pedestrians in varying group sizes to see whether there were any patterns in their turning behaviors, and what factors influenced them, if any. I...

Since 2019, GPS signals across Europe, Greenland and Canada have experienced a huge spike in sudden, widespread signal blackouts. These have resulted in disruptions and degraded performance in navigat...