immune system

We regularly answer frequently asked questions about the coronavirus. If you have a question you'd l...

It was the first day of spring break in 1992 in Phoenix, Ariz. and 12-year-old Heather Smith was exc...

Back in the day, many of us heard that the appendix is a vestigial organ — at best, a body part that...

How do viruses do their job of infecting humans? Some of them are experts at evading the immune syst...

Astronauts are supposed to be in excellent health. It's part of the job description. They quarantine...

Katie Wu is a bona fide cat person. She has two of them: twin boys named Calvin and Hobbes. Every ni...

Katie Wu is a bona fide cat person. She has two of them: twin boys named Calvin and Hobbes. Every ni...

In recent months, as the monkeypox virus swept through Europe, the Americas and parts of Asia, resea...