Public Health

Needle-free COVID-19 vaccine is in human trials
This app offers alternatives to 911 in all 50 states
Falling traffic lights can kill. One tweak could save lives.
How herpes hides
A simple webcam can automatically catch — and treat — infant jaundice
This device can automatically detect and reverse opioid overdoses
A patch to treat peanut allergies appears safe to wear for years
7 scientists we are thankful for this Thanksgiving
Tuberculosis may spread through aerosols, without coughing
Vaccine robot administers doses without needles or human help