It’s the first day of school for more than 1.8 million students, and some will be part of a science experiment not on the curriculum.
US coronavirus: More students go back to school as Covid-19 cases rise among children and at colleges
More Stories
Brazil rolls out COVID-19 vaccination plan
First Pfizer COVID-19 vaccine shipments to be delivered to US distribution sites starting Monday
CDC advisory panel recommends Covid-19 vaccine for people 16 and over