The count – We'll find out Tuesday how much the United States has grown in 10 years. The Census Bureau will release results of the 2010 census. In addition to revealing how many people live in the U.S., the census results also will determine how many congressional seats states will get.
Weathering storms – Southern Californians just want the rain to stop, but it's expected to keep coming Tuesday and Wednesday. Flooding and mudslides remain a big concern. Another storm might arrive on Christmas Day. Arizona and Nevada are also getting drenched.
And in Europe, snowy winter weather has stranded thousands of passengers. About a third of planes are expected to operate on schedule Tuesday at London's Heathrow Airport. People are not happy. Are you having trouble traveling? Let CNN know.
Over the moon – Did you see the lunar eclipse overnight? If not, just hang out for the next total one expected in the continental U.S. in 2014. The Earth's shadow covered the moon for more than three hours early Tuesday. The last lunar eclipse to happen on the first day of winter was in 1638. For more of this amazing sight, check out pictures from CNN iReporters.