Healthcare

Tuberculosis may spread through aerosols, without coughing
Just $50 can turn your phone into a powerful chemical, pathogen detector
A new clue in why oral vaccines don’t work as well in developing countries
A brain implant lets a blind person see again — without using their eyes
First-ever: drone delivers lungs for transplant
Cooling caps can help prevent chemo hair loss
Ear sensor can monitor COVID-19 patients remotely
Smart microscope slides make breast cancer cells leap off screen
Wearable health monitors help predict flu before symptoms start
New portable blood test kit is cheap, fast, and accurate