Saliva seems to help babies avoid allergies.
Skeeter spit is no friend to our immune system.
Check out these spitting images
Parasitic soup that’s good for you
Rapidly, to account for humans' changing diets, according to a new gene study
Behold the power of modern pizza forensics
Thinking of pulling off the perfect crime? Here’s one more thing you now need to take into account (thanks for … Continued
Tracing your lineage and assessing your disease risks just got cheaper
Your saliva holds clues to your history and your health
Like science, tech, and DIY projects?
Sign up to receive Popular Science's emails and get the highlights.