The innoculations and boosters that continue to change the world.
By Kate Baggaley
By Hannah Seo
By Betsy Ladyzhets
By Philip Kiefer
By Margo Milanowski
By Sara Kiley Watson
By Claire Maldarelli
By Elana Spivack
By Erin Fennessy
By Popular Science Team
By Claire Maldarelli, Sara Chodosh
By Sara Chodosh
By Rachel Feltman, Sara Chodosh
By Lauren Leffer
By Sandra Gutierrez G.
By Eleanor Cummins
By Sara Chodosh and Claire Maldarelli
By Nikita Amir
By Melinda Wenner Moyer
By Neel Dhanesha
By Ellie Shechet
Get Popular Science’s biggest stories delivered to your inbox.