In a Disrupted N.F.L., Teams Scramble to Adjust Their Routines - The New York Times
Coronavirus timeline: Looking back on the spread of COVID-19 in Colorado
NFL reschedules 3 games as new wave of Covid sidelines dozens of players
New York Times - Above the Treeline
Three NFL games moved due to COVID-19 outbreaks
Growth Mindset: Psychology of self-improvement
Virus Outbreaks Rattle N.F.L. and College Sports as Big Games Approach - The New York Times
Ravens-Steelers, After Delays, Ends with Pittsburgh Still Undefeated - The New York Times
Headwaters (U.S. National Park Service)