Meet the Indian teens who won $12,500 for building a salt-powered refrigerator after COVID-19 exposed vaccine storage challenges in villages without electricity

Three teenagers in Indore had watched their parents, all of whom worked in medicine, struggle with a problem that had nothing to do with treatment and everything to do with logistics: how do you keep a vaccine cold when there is no electricity for miles.

Raccontata datimesofindia.indiatimes.com