Moose, says Klein, don't do well in areas where the temperature gets above 80 degrees.

During summer, the average temperature is around , but gets above on hot days.

If the temperature does not get above zero, the discount is 75 percent, or just over $110 that night.

When the temperature gets lower and the particles slow down, it is easier for them to hold on to each other.

"The colder the temperatures get up north, the more it pushes them south," he said.

If the temperature gets above 90, people drink more soda.

The temperature in Chicago never got out of the 30's that day.

In summer, temperatures get into the 80's and fall near 60 at night.

So water evaporates much more slowly the lower the temperature gets.

How high are we willing to let the temperature of the planet get?