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Physicists are scrambling to understand why dark energy is weakening. In a surprising twist, we must now reconsider the possibility that our reality contains extra dimensions

Last year, our most detailed map of the universe yet suggested our understanding of dark energy has been wrong for decades. The shock result is reigniting the search for a better cosmic story   

Black holes that turn matter into energy could explain dark energy and answer two other cosmic questions. Now, the challenge is to find them

This is a New Scientist special package about shock results that have upended cosmology. What do they mean for our models of the universe, and what are the alternative explanations?

Putting silicate rocks from mine waste on fields could improve crops and limit global warming, but some researchers question where all that rock is going to come from

Fungus-farming ants have evolved a remarkable solution to the danger of excess carbon dioxide inside their nests – which could inspire ways for humans to capture CO2

The most comprehensive study to date has revealed what we need to eat throughout the day to sleep well that night

The latest in Adrian Tchaikovsky’s Children of Time series is out this month, along with a speculative retelling of Moby-Dick and a forgotten classic from 1936

Cables underneath New York City are teeming with entangled quantum particles of light thanks to Qunnect, a company that has spent a decade working on building an unhackable quantum internet

Magnesium has been called the “super mineral of the moment”, hailed for its supposed benefits for the brain and body. But columnist Alice Klein finds that the evidence is lacking for many of these claims