As you know, it is redundant to say that the Green Bay Packers will be playing this weekend on the "frozen tundra" of Lambeau Field ("tundra" means permanently frozen earth).
In fact, it's not even natural tundra. Or at least not 100 percent natural.
The playing surface at Lambeau Field is a "DD GrassMaster" hybrid of natural grass and indestructible blades of synthetic fiber. The manufacturer, Desso DLW Sports Systems, says it is about 97 percent natural grass and 3 percent polypropylene.