Aaron Rodgers' injury adds fuel to NFL's debate on grass vs. turf
The NFL Players Association wants the league to switch all fields to natural grass - CBS Los Angeles
Athletes may have higher risk of concussion on artificial grass
Turf time: Ranking the best and worst fields in the NFL - Sports Illustrated
Which NFL stadiums have artificial turf?
As injuries rack up, Packers players continue the turf vs. grass conversation
Germans push back against green alternatives to artificial football pitches –
The MMQB's Albert Breer on Chances NFL Bans Artificial Turf in Stadiums
Athletes remain concerned about injuries on artificial turf
Artificial Turf vs Grass for Football Fields
New data shows NFL injuries in artificial turf stadiums mostly exceed injuries in grass stadiums
Pass on “Plastic Grass”: Why Natural Options Win Over Synthetic Turf