Why do mosquitoes bite some people more than others?

Why do mosquitoes bite some people more than others?

– asks Allison from Austin

By | Posted September 10, 2007

I was just diagnosed with Lyme disease, but I heard the blood test can give false-positives—is that true?

I was just diagnosed with Lyme disease, but I heard the blood test can give false-positives—is that true?

– asks Mary from Pittston, Pennsylvania

By | Posted July 30, 2007

The Things They Carried

The Things They Carried

Parasites, bacteria and viruses mark the trail of human evolution.

By | Posted April 20, 2007

Fighting Malaria with Math

Fighting Malaria with Math

A new formula might help curb the spread of the deadly disease.

By | Posted July 11, 2006