Surprising fact about the NFL
It takes 3,000 cows to supply the NFL with enough leather for a year's supply of footballs.
Most single-game rushing yards in nfl history
Walter Payton had the flu when he broke the NFL record with 275 rushing yards when Chicago played Minn 11/20/77.
Corey Dillon broke his record in 2000 rushing for 278 yards Cincinnati vs Denver (10-22-2000)
That record was then broken by Jamal Lewis in 2003 with 295 yards. Then, in 2007, Adrian Peterson, in his rookie season, ran for 296 yards against San Diego (and LaDainian Tomlinson)
More world record facts.
More world record facts
The birth of the huddle
The football huddle originated at Gallaudet University (the world's only accredited four-year liberal arts college for the deaf) in the 19th century when the football team found that opposing teams were reading their signed messages and intercepting plays.
Hottest place on Earth
What is the hottest place on Earth? El Azizia in Libya recorded a temperature of 136 degrees Fahrenheit (57.8 Celsius) on Sept. 13, 1922 the hottest ever measured. In Death Valley, it got up to 134 Fahrenheit on July 10, 1913.