Health

A woman's reproductive tract can weed out unwanted sperm after sex, studies find

Getting vaccinated for the flu this year is particularly important, WHO officials say

First Covid-19 vaccine trial moving at a good clip, but officials still "very concerned"

Hundreds of Covid-19 cases reported as students return to college campuses

Black newborns 3 times more likely to die when looked after by White doctors

You're feeling all the feelings. Here is how to feel them

Faster test results and 'robust' immune response may offer hope of curbing the pandemic, experts say

Outdoor classes are safer. How can teachers make it happen?

Sour beer: The chemistry behind this wondrously complex craft brew

Your smartphone may be able to tell you when you're drunk