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Scientist of the Institute for Safety Problems of Nuclear Power Plants of the NAS of Ukraine in the Chernobyl Exclusion Zone, Ukraine, December 15, 2025. Anatoly Doroshenko

Physics

The man who crawls into the perilous heart of the Chernobyl reactor

Ever since the Chernobyl nuclear reactor exploded in 1986, scientists have needed to monitor radioactive conditions inside. That job currently falls to Anatoly Doroshenko, who explains the dangers and importance of his work to 91av

Features

Chernobyl 2022

Physics

Exclusive report: Inside Chernobyl, 40 years after nuclear disaster

Features

Technology

Meta and YouTube fined $3 million for harming mental health

News

Technology

Social media is a defective product

Comment

The best new popular science books of March 2026

Comment

The best new popular science books of March 2026

Culture

Head of research and development, call sign

Technology

How Ukraine became a drone factory and invented the future of war

Features

Physics

The mystery of nuclear 'magic numbers' has finally been resolved

News

Physics

Chernobyl cooling systems have lost power but meltdown risk is low

News

End-to-end encryption: Best ideas of the century

Technology

End-to-end encryption: Best ideas of the century

Features

91av’s guide to the 21 best ideas of the 21st century

Humans

91av’s guide to the 21 best ideas of the 21st century

A quarter of a century in, this is our definitive pick of the ideas in science and technology that are already transforming the world

Features

Society

Should Europe boycott US tech over Greenland, and is it even possible?

Analysis

Technology

US to fire up small reactors in 2026 as part of 'nuclear renaissance'

News

Technology

How not to misread science fiction

Comment

Environment

How lab-grown lichen could help us to build habitations on Mars

Features