In America, the autumn season means two things -- back to school and back to football. To celebrate both events, NBC News' educational arm, NBC Learn, is teaming up with the National Science Foundation (NSF) and the National Football League (NFL) to release the "Science of NFL Football"- an informative 10-part video series that explores the science behind America's most beloved sport. Narrated by NBC News' Lester Holt and made especially for students and teachers as they ...