There is much to read about with respect to Christmas Fermi problems.

Here are some questions to ponder while out and about today.

- If all the wrapping paper used to wrap Christmas gifts were compressed to a ball with the average density of cardboard, how big would ball be? How much would the ball weigh?

- How many miles of scotch tape are used to wrap all the presents?

- How many Christmas trees are killed each year? If burned for energy, how many houses could this heat for a day?

- Estimate how many collective years are spent listening to Christmas music in the last 30 days? The last week? Just today? (Is there a distribution?)

- How many times are the words "Have a merry Christmas!" used over the last 30 days? Week? Just today?

- How much food is consumed Christmas day as compared to an average day?

- How many calories are expended Christmas day as compared to an average day?

- Give a rough estimate on how many gifts are given, and how many are returned, and how much gas is burned returning all those gifts to the store?