Ari Daniel

Three years ago, the novel coronavirus swept the world. Here are 24 quotes and 13 photos that sum up the reaction in the weeks before the World Health Organization's declaration of a global pandemic.

A new study in PLOS Biology finds that bumblebees can learn to solve puzzles from each other — suggesting that even invertebrate animals may have a capacity for culture.

New research suggests that vocal fry among toothed whales is what gives them the ability to echolocate, hunting down their prey with the loudest sounds produced by any animal on the planet.

Scientists have confirmed that toothed whales use vocal registers to produce a variety of sounds – something previously confirmed only in humans and crows.

Treating cholera has been a passion for Bangladeshi scientist Firdausi Qadri. She reflects on her career and inspirations, cholera's scourge, as well as successes in combating the disease.

Archaeologists have discovered evidence of a rare type of skull surgery dating back to the Bronze Age that's similar to a procedure still being used today.

Neudy Rojop made a girlhood pledge. When family members fell ill, she says she decided to become a nurse "so I could change my community for good."

Killer whale moms spend a lot of energy and resources on their adult sons. Research shows that could impact their reproductive success long-term.

Orca moms spent precious resources feeding their fully grown adult male offspring. A new study finds that this may limit how many more young they produce.

In Guatemala's mosquito-plagued lowlands, researchers use a novel tool to suck up mosquitoes to analyze pathogens in their latest blood meal. The hope is to stop the next pandemic before it starts.

Nipah virus, which can rapidly infect and kill members of a community, is carried by bats. Exactly how does it cross over into humans? Researchers in Bangladesh are trying to find out.

Every couple of years, a deadly outbreak of Nipah virus terrorizes villages in Bangladesh. Scientists there are studying the virus, which is harbored in fruit bats, to stop the cycle of outbreaks.

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.