Scientists worry that if vaccinated people are silent spreaders of the virus, they may keep it circulating in their communities, putting unvaccinated people at risk. Photograph:  Matthew Horwood/Getty

The new Covid-19 vaccines from Pfizer and Moderna seem to be remarkably good at preventing serious illness. But it’s unclear how well they will curb t(...)

 Joe Biden, Democratic presidential candidate. on the campaign trail as he visits a a cafe in in Phoenix, Arizona. Photograph: Brendan Smialowsk/ AFP/Getty Images)

Stepping off the plane in Phoenix, Arizona, passengers are welcomed by a wall of heat. It may be mid-October but the temperature on this autumn weekda(...)

Although researchers cannot forecast how long these immune responses will last, many experts consider the data an indication that the body’s most studious cells are doing their job. Photograph: iStock

To the immune system, not all germs are equally memorable. But our body’s cells seem to be seriously studying up on the coronavirus. Scientists who h(...)

A man wearing a facemask and face shield walks in a downtown park in California. Photograph:  Robyn Beck/AFP via Getty

More than two months after the United States recorded its worst day of new infections since the start of the coronavirus pandemic, the nation reached (...)

Jonathan Van Ness: ‘You’re never too broken to be fixed.’ Photograph: Isak Tiner/New York Times

Jonathan Van Ness was having a late breakfast at the Empire Diner, around the corner from his one-bedroom apartment in the Chelsea area of New York ci(...)

Considering the benefits of modern-day sanitation, vaccinations and healthcare, the likelihood of getting sick from our shoes is ‘infinitesimally small as to almost be unwarranted’. Photograph: iStock

Maybe you kick off your shoes at home because you don’t want to track dirt across clean carpets or floors, or maybe it’s just a relief to shed them. (...)

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(...)

Civic workers carry out fumigation in Bangalore, India. Photograph:  Jagadeesh NV/EPA

Climate change is poised to increase the spread of dengue fever, which is common in parts of the world with warmer climates like Brazil and India, a n(...)

Katie Bouman was among a team of 200 researchers who contributed to the breakthrough to create the photograph of a black hole. Photograph: MIT CSAIL

As the first-ever picture of a black hole was unveiled this week, another image began making its way around the internet: a photo of a young scientist(...)

Regular cleaning of your laptop is   a no brainer and is even more paramount if you’re not the only user.  Photograph: Getty

Just how dirty can a laptop be? Well according to researchers at the University of Arizona, they’re filthy and can harbour 400 times more bacteria tha(...)

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