Sports Illustrated’s current cover says it all.

Green Options reports environmentalists aren’t the only ones talking about global warming anymore: it’s affecting ski resorts, insurance companies, and a host of cultural institutions like the wide world of sports:

The Miami Dolphins have built a climate-controlled bubble to avoid the extreme Florida heat during practices, seven World Cup ski racing events in Europe have been cancelled this season because of warmer temperatures, and Alaska’s Iditarod dogsled race hasn’t started at its traditional location in five years because of lack of snow.

So what is the sport world’s part in fighting global warming?

Make sure stadiums are easily accessible by mass transit and install renewable energy systems (solar or wind) on stadiums are a few ideas. But many professional organizations and athletes are taking action now:

Gillette Stadium in Foxborough, MA has a water filtration and reuse system that collects and recirculates “black” and “gray water” to make the most of all that beer and all those flushes.

Saints safety Steve Gleason runs his Dodge Ram pickup on biodiesel.

The NFL planted 3,000 trees around Florida to try to offset Super Bowl XLI’s estimated one million pounds of carbon dioxide emissions, a main contributor to global warming.