More readers wade into the debate on whether it is better to carry a container of water and drink when necessary or guzzle ...

One reader draws on his chemistry days to explain why some types of plastic become fragile after exposure to ultraviolet ...

Readers explain that this colouration pattern in many living things is all about camouflage, while its opposite tends to ...

Why are hominin fossils in caves often buried under metres of sediment? And can two negatively charged black holes repel each ...

Exposing the origins of the improbable – and at times scary – plans of tech billionaires makes Adam Becker's More Everything ...

Feedback was pleased to come across journalist Taylor Lorenz's coining of the word "viralflation", as videos with hundreds of ...

It is rare to find brown dwarf stars orbiting in pairs, and this pair has an even more unusual exoplanet companion ...

The idea that the rise of tech means today's young people are less intelligent than previous generations is rife – but wrong, ...

It is harder for our bodies to absorb key nutrients from plant-based foods, so some vegans may be short on essential amino ...

Beginning around 3000 years ago, Tel Shiqmona in modern-day Israel was a major centre for the production of Tyrian purple, a ...

A weakening of Earth’s magnetic field known as the Laschamps event would have increased the threat of solar radiation, ...

Photographer Mitch Epstein's years-long project highlights the majesty and vulnerability of old growth forests across the US ...