Ear hair is a topic that often elicits chuckles or even a grimace. It’s a natural part of human anatomy, yet its presence can spark debate. Some consider it unsightly and a sign of aging, while others ...

I love visiting with my grandma. But sometimes I have to talk loudly so she can hear me. I asked my friend Christine Portfors why that is. She’s a biologist at Washington State University. She told me ...