The world, in perspective.

A new strain of Covid-19 spreading around the world has served to highlight the lingering and evolving threat posed by the virus – nearly seven years after it first emerged. Doctors have said the new form of the virus , named PJ. 2.1, does not appear to be significantly more harmful than other recent types but is accounting for a greater proportion of cases.

Our NFL Nation reporters react to all the action, answering the biggest questions coming out of each Sunday game. Here's what we learned from Week 9.