Ari Daniel

Human bodies use light to help tune their body clocks, and that's true even for some blind people. How does this work? It's a circadian mystery.

In a crucial moment during an overtime battle with the Phoenix Suns, Denver forward Aaron Gordon seemed to fly to the rim. Analysts are calling it the dunk of the year.

A kind of transparent frog achieves near invisibility by hiding its red blood cells during the day, scientists found. "I had never seen anything like that," researcher Carlos Taboada says.

We mark our days by sunlight, with special receptors in our eyes that respond to light and help reset our body clocks each day. This man can't see, but is still a circadian wiz. Here's how.

New research points to a surprising way to stop spillovers of Hendra virus, which is harbored by bats. It's not often that it jumps to horses, then humans, but when it does, the result are brutal.

Several crises in the country — including political instability, COVID and financial collapse — have created deteriorating conditions that have allowed the bacteria to spread.

The Anopheles stephensi is a well-known malaria mosquito, but still sort of new in Ethiopia, where it has caused dramatic, out-of-season outbreaks in ill-equipped cities, new research shows.

Conflict in Tigray has led to a collapse of its public health system. Physicians are having to reuse gloves, use expired medications and deny patients care because of lack of resources and power.

Civil war has blockaded the country's northern region and decimated a hospital system that serves nearly 7 million people. Without basic supplies, power and medicine, thousands are needlessly dying.

A new report from the Lancet Commission sums up the many mistakes that have been made and offers proposals for a more effective global strategy if and when another pandemic should strike.

We've got any number of devices we can strap to our bodies to track our footsteps, heart rate, and sleep patterns. Next up, possibly — sweat monitoring for precision rehydration and worker safety.

As polio makes a comeback, Minda Dentler reflects on her life with the disease. Paralyzed as an infant in India, she's gone on to become a champion wheelchair triathlete and an immunization advocate.

Shortly after Russia's invasion, we heard from a Ukrainian neurologist about how she was able to continue her practice. Over the last 6 months, her work has changed significantly.

Dr. Aleksandra Shchebet fled Kyiv but resolved to help any way she could, from virtual visits to packing medical supplies. Now she's back home, tending to patients who are deeply affected by the war.

Polio is spreading in a few New York counties with low vaccination rates. Experts warn that other places in the U.S. could face the same challenge.

In two New York counties, city health officials have been tackling a worrying trend: polio samples showing up in wastewater. In one county, a young adult became sick and paralyzed from the disease.

That's how neuroscientist Meg Younger describes her team's findings about how skeeters hone in on human aromas. And that could lead to better ways to keep us bite- and disease-free.

Two new studies draw on data from more than 12,000 patients to help figure out ways to battle antibiotic-resistant tuberculosis.

The Biden administration is allowing the shot to be given between layers of skin — a method that only requires a fifth of the full dose — in order to increase vaccinations and slow the outbreak.

The World Health Organization has declared monkeypox a public health emergency of global concern. Here's what that means and where the U.S. stands in terms of treatments and vaccines.