Scientists are examining long-ignored extrachromosomal DNA to understand how cancer evolves resistance to drugs. Can the clues help us outfox cancer itself?

New research provides evidence that how people in the United States respond to the coronavirus pandemic is related to their partisan media preferences.

As the contagion spreads, we look ahead to winter and wonder whom we can safely pull close.

A male nurse has traded in a diet of quinoa and vegan sausages for beef fat and uncooked lamb’s brain – claiming raw meat has made him mighty. When a year of being vegan made him “fat and sluggish”, instead of giving him the trim physique he wanted, Jason Carter, 34, slowly reintroduced meat and dairy – then going to the opposite extreme at the start of 2020, by devouring nothing but raw meat.

A Covid-19 vaccine candidate being developed in China has been found to be safe and to trigger an antibody response, early results have shown. Researchers said those aged 60 and over were slower to respond to the BBIBP-CorV vaccine, but they said it was "encouraging" that the vaccine did trigger such a response. They also found antibody levels to be lower in those aged 60 to 80 years, compared with those aged 18 to 59.

What might the world be like if everyone on Earth had albinism, from prehistoric times until now?

For the thousands of Canadians at risk of blindness, eight-year-old Sam is a beacon of hope. He is the first Canadian to be treated with gene replacement therapy for a rare form of blindness which had left Sam unable to see sky on a cloudy day, and unable to make out shapes in the dark.

Cold water swimming may protect the brain from degenerative diseases like dementia, researchers from Cambridge University have discovered. In a world first, a "cold-shock" protein has been found in the blood of regular winter swimmers at London's Parliament Hill Lido. The protein has been shown to slow the onset of dementia and even repair some of the damage it causes in mice.

Review finds quality of evidence is poor and noise may lead to more disrupted sleep

Holmes claimed her right to a speedy trial has been violated, but the judge said the delay was mostly her fault.

Study team says Covid-19 patients in intensive care should be asked about hearing loss

How the world’s greatest public health organization was brought to its knees by a virus, the president and the capitulation of its own leaders, causing damage that could last much longer than the coronavirus.

After contracting the coronavirus in March, Michael Reagan lost all memory of his 12-day vacation in Paris, even though the trip was just a few weeks earlier. Several weeks after Erica Taylor recovered from her Covid-19 symptoms of nausea and cough, she became confused and forgetful, failing to even recognize her own car, the only Toyota Prius in her apartment complex’s parking lot.

People with a poor understanding of quantitative information are more likely to endorse myths about COVID-19 and those who believe such misinformation are ...

New Australian research finds the coronavirus that causes COVID-19 can live for up to 28 days on surfaces such as mobile phone screens and ATMs — much longer than previously thought.

Researchers have seen promising results by injecting dog and mouse tumors with the cowpea mosaic virus. Now they’re aiming for a human trial.

The top immunologist's comments come the week that Donald Trump said people need not be afraid of COVID-19.

On Friday, GoodRx filed its Form S-1 in preparation for going public.

New research finds that too much social contact - for example on a daily basis - is linked to worse health and lower survival rates.

Top aide Hope Hicks traveled with the president multiple times this week, including aboard Marine One and Air Force One.