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Extras
Airs Tuesday, August 23, 2011 at 9:00 p.m. ET/PT. Check your local listings.
Football High - Preview
In this excerpt, researchers examine the daily wear and tear of football on young brains.
New Head Injury Research
For this ambitious young quarterback, it's not just about putting up numbers on the field
Marketing Kiehl Frazier
You would think first-grade summer football is just organized chaos, but you'd be wrong.
Starting Young
Of the 89 players on Trinity High School's varsity team, 18 of them weigh over 250 pounds.
The Power of Size
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