0degrees celsius.
1967 NFL championship game, Packers and Cowboys in Green Bay. Kickoff temperature -13 degrees, wind chill -46 degrees, final score GB 21 DALLAS 17.
A metal bowl keeps ice cream frozen the longest.
The cold ice is called dryice, you can go to the mart or some whereelse.
A ice rink has a special floor that holds water in it like a pool. It takes about 4-5 hours to freeze the rink. In order to keep the ice rink frozen and solid, the temp. has to be 32 degrees or less....