The pandemic forced this years conventions to go virtual. That won't be the end of the change, as future gatherings shift from the age of television to the world of social media and viral moments.

Many of those institutions hung on year-to-year even before the pandemic. Now COVID-19 threatens to cut off the oxygen sustaining these schools, and the sports programs that drive enrollment.

The president's campaign had begun holding "Black Voices for Trump" events, but the coronavirus pandemic shut down in-person campaigning for months. During that time, the election landscape shifted.

The experts and regulators are calling for the federal government to renew efforts to bolster safe storage, handling, use and transport rules for ammonium nitrate in the U.S.