As school officials worry about whether they can safely reopen their districts in the fall, Joseph Allen, a Harvard healthy buildings expert has an answer: yes.

Cellphone mobility data shows that most Americans have put the coronavirus lockdown in the rearview mirror and are moving about at nearly the same rate as they were before the pandemic began, according to a Harvard epidemiologist who studies such data.

SARS-CoV-2 can be spread through the air. But just how much of a factor that is has been hard to determine. Recent evidence suggests it is common, posing problems as public places begin to reopen.

Smartphone apps and wearable devices can tell when workers have been within six feet of each other, promising to help curb the coronavirus. But they're not all the same when it comes to privacy.

It's nearly impossible to avoid close contact when protesting, and easy to forget the risks. An infectious disease expert answers key questions about how to avoid spreading the coronavirus to family.

If coronavirus is still circulating, why are we safer now that social distancing measures have been relaxed? A public health expert explains.