The more time students spent in remote instruction, the further they fell behind. And, experts say, extended closures did little to stop the spread of Covid. By Sarah Mervosh Claire Cain Miller and ...

During the lockdowns of the COVID-19 pandemic, the education sector implemented online teaching using a variety of online learning platforms (OLPs). Pakistan, a developing country, was not fully ready ...

In the US, COVID-19 has killed more than 1.1 million people, infected more than 100 million, and disrupted lives in ways we are still trying to understand. Our continued public health response to this ...