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Aerial view of Amsterdam in the Netherlands

Video

How will Amsterdam become a fully circular economy by 2050?

Amsterdam aims to become a fully circular city by 2050, with a plan to halve new raw material use by 2030. 91av explored projects leading this green shift.

Video

peridot crystals with a few dark olivine crystal

Earth

How captured carbon dioxide could help mine carbon-negative nickel

News

Space

Physicists are waging a cosmic battle over the nature of dark energy

News

Space

Strange 'sticky' dark matter could be lurking in a distant galaxy

News

Environment

China's CO2 emissions have started falling – is this finally the peak?

News

Environment

A clean energy source may be lurking beneath mountain ranges

News

Space

Dark energy bombshell sparks race to find a new model of the universe

News

Earth

Earthquakes could be an overlooked source of underground hydrogen fuel

News

Physics

First ever 'black hole bomb' created in the lab

News

Environment

Wind farm developers are worried about neighbours stealing their wind

Wakes from offshore wind farms can reduce the power generated by neighbouring farms – an issue that is growing more prevalent as turbines get bigger and more numerous

Analysis

Environment

Extreme weather could disrupt China's renewable energy boom

News

Environment

How toilet waste is being rebranded as a valuable resource

Comment

Chemistry

Nuclear fusion fuel could be made greener with new chemical process

News

Space

Dark energy isn't what we thought – and that may transform the cosmos

News