Yemeni children in the city of Taez listen to their teacher this month in a destroyed classroom at their school which was heavily damaged in an air strike during fighting between the Saudi-backed government forces and the Huthi rebels. Photograph: Ahmad Al-Basha/AFP/Getty Images

Two decades ago, nearly 10 million children did not live to see a fifth birthday. By 2017, that number – about 1 in every 16 children – was nearly cu(...)

Claire Morrissey running the 101km Eiger Ultra Trail in Switzerland last July.

It is many people’s idea of hell – running through treacherous terrain over mountains for days and nights in often hostile weather conditions – but mo(...)

Structure of the amyloid beta peptide   bound to the cell membrane. Scientists at Washington University  reported that they had devised the most sensitive blood test yet. Photograph: Getty Images/iStockphoto

For decades, researchers have sought a blood test for beta amyloid, the protein that is a hallmark of Alzheimer’s disease. Several groups and companie(...)

The  most important advice: Do not check your sleep data on a regular basis. Photograph: Andrey Popov/iStock

For the last two weeks, I’ve added an extra step to my bedtime routine – strapping a computer around my wrist. The new nightly move was prompted by a(...)

Gopala Anumanchipalli, a neurologist at UCSF, holding an array of electrodes similar to those used in a study. Photograph: University of California, San Francisco via The New York Times

“In my head, I churn over every sentence 10 times, delete a word, add an adjective, and learn my text by heart, paragraph by paragraph,” Jean-Dominiqu(...)

The electrode array used in a groundbreaking new study. Photograph: University of California, San Francisco via The New York Times

A brain decoder that allows people literally to “speak their minds” could one day help doctors communicate with patients who cannot talk. The technol(...)

Paddy O’Leary   during his record run on The Wicklow Round.  Photograph: Ian MacLellan

There is a certain myth and perhaps misconception about the ultra marathon trail runner which Paddy O’Leary appears to talk up and play down at the sa(...)

The angled shell of the leopard tortoise helps the tortoise roll back on to its feet no matter which way it falls.

Here was the challenge for bioengineers: Find a way for patients to take drugs – such as insulin or monoclonal antibodies used to treat cancers and ot(...)

“There is little evidence that popular remedies, such as echinacea and vitamin C, can prevent or treat a cold”, says Prof  van Driel

1. Look after yourself Studies have suggested that being active can help prevent respiratory infections, but cutting out smoking, reducing alcohol in(...)

In 2003, Chuck Feeney signed off on a decision to spend all of his fortune in his lifetime. “Giving while living,” he called it.

Chuck Feeney today is a man of no property. He and his wife Helga live in a modest rented apartment in San Francisco. He has no car or luxuries of any(...)

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