The levels of a heavy form of hydrogen in 3I/ATLAS are 30 to 40 times higher than in Earth's oceans, suggesting the comet has a cold and distant origin

A radical idea that resolves many quantum paradoxes suggests there is no objective view of reality. How can the cosmos be stitched together from interlocking perspectives?

A radical idea that resolves many quantum paradoxes suggests there is no objective view of reality. How can the cosmos be stitched together from interlocking perspectives?

All five of the canonical nucleobases – the underpinnings of DNA, RNA and life on Earth – have been found in samples from the asteroid Ryugu

All five of the canonical nucleobases – the underpinnings of DNA, RNA and life on Earth – have been found in samples from the asteroid Ryugu

Scientists disagree whether human-made climate change or natural fluctuations are mostly to blame for worse-than-expected heat in recent years

Scientists disagree whether human-made climate change or natural fluctuations are mostly to blame for worse-than-expected heat in recent years

With the Trump administration’s attacks on so-called woke AI it is becoming even harder to make the technology we use fairer and more diverse. Leading voices are speaking out, reports Catherine de Lange

With the Trump administration’s attacks on so-called woke AI it is becoming even harder to make the technology we use fairer and more diverse. Leading voices are speaking out, reports Catherine de Lange

Ancient DNA reveals that the Goths of eastern Europe, some of whom would ultimately sack the city of Rome, may have been a mix of peoples from three continents

Ancient DNA reveals that the Goths of eastern Europe, some of whom would ultimately sack the city of Rome, may have been a mix of peoples from three continents

Dimensions beyond the four we’re familiar with could solve a host of problems in physics and cosmology. Columnist Leah Crane explores what a higher-dimensional universe might be like – and how we could find out if we live in one

Dimensions beyond the four we’re familiar with could solve a host of problems in physics and cosmology. Columnist Leah Crane explores what a higher-dimensional universe might be like – and how we could find out if we live in one