NASA tested out the World Cup 2014 and gave it a pair of thumbs up, saying that it's a marked improvement over 2010's Jabulani
Adidas unveils 2014 World Cup ball — its 'most tested ball ever' - Yahoo Sports
Why the World Cup Suddenly Has So Many Goals - Nautilus
Jabulani Wallpapers - Wallpaper Cave
NASA says adidas' brazuca ball is better than Jabulani because duh (and science)
Jabulani Wallpapers - Wallpaper Cave
Telstar to Jabulani to Brazuca: Evolution of World Cup Final Ball, News, Scores, Highlights, Stats, and Rumors
NASA tests World Cup match ball
2014 world cup, Brazuca: The physics of Adidas' new World Cup ball.
Brazuca behind World Cup goal spree?
NASA Turns World Cup into Lesson in Aerodynamics - NASA
World Cup Soccer Balls Can Be a Drag
Brazuca - Jabulani - Teamgeist, FIFA World Cup Match Balls
The science behind the World Cup ball