Learn how heartworm disease became widespread in dogs, reflecting an evolutionary history that spans back to ancient times.

Do you know what the universal blood type is? Apparently, only one in 10 Americans do. (It’s O-negative, by the way.) How much do you know about the lymphatic system? And do you know if you’re getting ...

A dog in the San Fernando Valley was found to have Baylisascaris, or raccoon roundworm, eggs in its system during a routine checkup. It is the first formally reported detection in a dog in L.A. County ...

Racoon roundworm is a parasite that's commonly found in the feces of racoons. Dogs that ingest racoon roundworm eggs could get sick, showing symptoms, including lethargy, vomiting and diarrhea. In ...

A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many have come to associate with the virus. As cases reach "very high" levels in ...

Findings about our human ancestors continue to surprise us, especially those from 2025. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A handful ...

We’ve long known of the link between depression and dementia. Now, a new study pinpoints six depressive symptoms in middle age that can predict dementia more than two decades later. Dementia diagnoses ...

Something about a warm, flickering campfire draws in modern humans. Where did that uniquely human impulse come from? How did our ancestors learn to make fire? How long have they been making it?

There’s new progress in the battle against Alzheimer’s disease. About 1 in 9 US seniors has Alzheimer’s, the most common form of dementia, which slowly impairs memory, thinking skills and the ability ...

A person in the Washington State has died of avian influenza. It’s the first human death from bird flu in the U.S. since January—but the infection was of a different strain than the one that has been ...

After a Western Washington resident died of complications from a rare form of avian flu you may be wondering if you’re at risk of getting sick. An older adult from Grays Harbor County died Friday, Nov ...