For the first time in World Cup history, a Middle Eastern nation has been selected for the games; Qatar's won the bid for 2022. Here's the thing--during summertime, when the World Cup is always held, Qatar can get up to 46 degrees Celsius (that's 115 Fahrenheit in Yankee terms). If the players don't wilt, the fans surely will.
To combat this, the wealthy nation is constructing twelve stadiums that are not only super-designey, but will reportedly feature solar-powered air conditioning tuned to produce zero carbon. Needless to say this has never been done on structures of this size, so it will be interesting to see if/how it works. If they can pull it off, the implications will obviously go farther than a mis-kicked Jabulani.
You can check out all of the designs here, and below is a beautifully-produced vid presenting the first five of the stadium designs: