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EVROS, GREECE - AUGUST 31: A firefighters runs as wildfire intensifies in the village of Sidiro and Yannuli in Evros, Greece on August 31, 2023. Efforts to extinguish wildfire continues. (Photo by Ayhan Mehmet/Anadolu Agency via Getty Images)

Environment

Why 2023 was almost certainly the hottest year ever recorded

Greenhouse gas levels and the arrival of the El Niño weather pattern pushed the world’s climate into “uncharted territory” in 2023

News

Wolf-Rayet stars are known to be efficient dust producers, and the Mid-Infrared Instrument (MIRI) on NASA?s James Webb Space Telescope shows this to great effect. Cooler cosmic dust glows at the longer mid-infrared wavelengths, displaying the structure of WR 124?s nebula. The nebula is made of material cast off from the aging star in random ejections, and from dust produced in the ensuing turbulence. This brilliant stage of mass loss precedes the star?s eventual supernova, when nuclear fusion in its core stops and the pressure of gravity causes it to collapse in on itself, and then explode. As MIRI demonstrates here, Webb will help astronomers to explore questions that were previously only left to theory about how much dust stars like this create before exploding in a supernova, and how much of that dust is large enough to survive the blast and go on to serve as building blocks of future stars and planets.

Space

Six of the most amazing space pictures from 2023

News

GTG9F9 Hot mulled wine and book in woman hands. Relaxing in front of burning fire in the cold winter day.

Chemistry

Can science explain why some drinks and foods are a perfect match?

Regulars

Alastair Reynolds: An exclusive short story for 91av

Society

Alastair Reynolds: An exclusive short story for 91av

Culture

Close up image of a selection of freshly flame grilled burgers in a row on a wooden counter at a London street food market. Each of the burgers has its own label, on which is written the contents of the burger. The burgers are sandwiched between glazed buns, and presented on beds of fresh green lettuce and stuffed with melted cheese and red onion. Horizontal colour image with copy space and beautiful bokeh background.

Health

Cancer in young people is rising and 2023 saw a plan to figure out why

News

2PNBXXP Pack of Ozempic, antidiabetic for weight control, taken in a pharmacy in Niesky, April 13, 2023.

Health

Wegovy and Ozempic made 2023 a revolutionary year for weight loss

News

NEW DELHI, INDIA - AUGUST 23: People celebrates after successful landing of Chandrayaan 3 on Moon at Nehru Planetarium on August 23, 2023 in New Delhi, India. The Chandrayaan-3 lander module has successfully touched down on the Moon's south pole, making India the first nation in the world to achieve this feat. India is also the fourth nation, after the United States, China and Russia to have landed on the Moon. (Photo by Sanchit Khanna/Hindustan Times via Getty Images)

Space

India made history with 2023's low-budget Chandrayaan-3 moon landing

News

2RF6WE0 FOTOMONTAGE, Miniatur-Roboter auf einer Computerplatine mit dem Schriftzug ChatGPT

Technology

2023 was the year that artificial intelligence went mainstream

News

David Smith, Joseph Myers, Chaim Goodman-Strauss and Craig S. Kaplan prove that a polykite that we call

Mathematics

Mathematicians discovered the ultimate bathroom tile in 2023

News

Health

Stretchy electrodes shrink when wet to fit snugly around organs

A material inspired by spider silk contracts to less than half of its length when exposed to water, and could be used for soft medical devices that adjust their shape around tissues and organs inside the body

News

Chemistry

How to use 'flavour bridging' to cook a bizarre but tasty holiday meal

Features

Technology

The top ten films about artificial intelligence according to an expert

Culture

Comment

The best science-inflected music of 2023

Culture

Comment

The best 3 board games of 2023 – if you love science

Culture