To answer a question or ask a new one, email lastword@newscientist.com Between 50,000 and 100,000 tonnes of light gases such ...

One reader shares a personal experience of switching his method of cutting his lawn, while another brings some more science ...

Our readers continue to grapple with this one, with the latest batch of answers giving a more hopeful response to any readers ...

Chimpanzees are consuming significant levels of alcohol from their diet of ripe fruit and the finding may help explain the ...

A fossil from about 108 million years ago reveals an early member of the pachycephalosaurs, a group of dinosaurs with bizarre ...

There are more centenarians now than ever before. But more must be done to address inequalities that prevent people from ...

The photos tell an unusual rescue story – the release of the critically endangered Javan slow lorises into Ujung Kulon ...

This is the first quantum computer fully built using standard silicon chip manufacturing techniques – a step towards the mass ...

A radical idea to standardise packaging isn't anti-capitalist, and it's the only way to make a truly circular economy for ...

Ian McEwan’s excellent What We Can Know is set in a UK largely swallowed up by rising seas. Emily H. Wilson explores the ...

Steven Pinker’s new book When Everyone Knows That Everyone Knows makes a compelling case for common knowledge. Shame the ...

We are still waiting for the retro-futuristic tech and social revolutions envisioned in science fiction’s old gold, writes ...