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Injectable PrEP could protect people at risk of contracting HIV

26 July 2017

Long-acting pre-exposure prophylaxis and antiretroviral therapy drugs could replace daily pills for people who have HIV or are at risk of contracting it

Stem cells in the brain's hypothalamus help mice stay young

26 July 2017

A cluster of brain stem cells fight ageing in mice. They may do this by releasing molecules of micro-RNA – a process that anti-ageing drugs may be able to mimic

60 Seconds

26 July 2017

Just a glance stops trips, SpaceX drops Mars lander, gene-editing hope for muscular dystrophy, and more

Toy drones can pose more danger to planes than commercial ones

26 July 2017

Toy drones in the UK will soon face similar regulations to commercial ones after a report finds that they pose a danger to aircraft in collisions

UK relaxes blood donation rules for gay men and sex workers

26 July 2017

A review says blood screening tests are now accurate enough that gay men only need to abstain from sex for three months before giving blood

Taking back control must not mean a return to overfishing

26 July 2017

The return of North Sea cod to sustainable status has been greeted with glee in the UK. We must not let Brexit jeopardise this success

Feedback: How many nuts does it take to fill a printer's pie?

26 July 2017

Tales from the hot press. Plus: more places to visit on a science pub crawl, why the French might turn their noses up at the Toyota MR2, and more

Salvaging Hubble

26 July 2017

The illustrious Hubble Space Telescope will eventually re-enter Earth's atmosphere and be destroyed – or so I understand. Could it be returned to Earth safely and put in a museum? If so, what would be the cheapest way to do it?

Feel the heat

26 July 2017

On a beautifully sunny, windless day last summer, I sat in my back garden and felt very warm indeed. The air temperature was 16°C, but there is no doubt that it felt more like a day when the thermometer read 25°C. Why the discrepancy?