CONFLICT: Hang Gliders vs. Paragliders
RESOLUTION: Safer wings make paragliding explode in popularity.
CONFLICT: Snowboarders vs. Skiers
RESOLUTION: The advent of park and pipe makes skiing cool again.
CONFLICT: Skateboarders vs. Rollerbladers
RESOLUTION: Rollerblading dies an ignoble death.
CONFLICT: Windsurfers vs. Kitesurfers
RESOLUTION: The Olympic committee nixes windsurfing for kitesurfing for the 2016 Games.