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Environment

Billionaires must not be allowed to geoengineer the planet

There is nothing stopping the wealthiest people from attempting to alter the world's atmosphere – this must not be allowed to happen

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MARSEILLE, FRANCE - 2021/07/10: Protesters set a sphere representing Earth on fire during the demonstration. Members of the Extinction Rebellion group, supported by a few Yellow Vests (Gilets Jaunes in french), gathered in the Vieux-Port of Marseille to raise awareness on the dangers threatening the planet Earth. (Photo by Gerard Bottino/SOPA Images/LightRocket via Getty Images)

Comment

We've hit a climate tipping point, but leaders seem unlikely to act

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Mature female patient lying on table entering MRI machine in hospital setting. Medical professional in white coat standing nearby. Professionalism, precision, and modern health technology.; Shutterstock ID 2540873879; purchase_order: -; job: -; client: -; other:

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Commercial health tests promise peace of mind, but do they deliver?

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Simple, conceptual image of loose pain killers on a plain white surface. They are three colours, red, white and blue. They cast shadows.

Trump's unfounded health claims cast a long shadow

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Health

We can avoid the agonising wait for advances in women's healthcare

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portrait happy senior asian woman look at camera

Health

In the race to reach 100, the wealthy have a head start

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Physics

Even in our digital world, materials still matter

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a teenager holding a cell phone in his hand

Technology

We have let down teens if we ban social media but embrace AI

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Illustration of a teenage girl who is the offspring of a Neanderthal (Homo neanderthalensis) mother and Denisovan (Homo sapiens denisova) father. A bone fragment with this hybrid ancestry was found in the Denisova Cave in Russia. The bone belonged to a female who was at least 13 years old and died around 90,000 years ago. It was known from genetic analysis of other fossils that the two species had interbred, but this is the first first-generation offspring of such a pairing to be found.

Humans

Understanding the Denisovans means understanding ourselves

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A new angle on brain health could bring much-needed new treatments

Health

A new angle on brain health could bring much-needed new treatments

Psychiatric medicine hasn't changed much since the 1960s. Could blocking the effects of chronic inflammation on the brain be the step change we need?

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Health

Why ageing doesn't have to mean years of poor health

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Health

We should consider testing Ozempic on healthy people

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Health

Let a breakthrough in measuring body clocks ease the ills of shiftwork

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Humans

Homo naledi's burial practices could change what it means to be human

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