As the American population grows and people build homes farther away from urban centers, tornadoes will have more things to run into.

CLIMATE CHANGE
Finding water on Mars? Amazing! Finding water in Antarctica? Potentially scary.
What exactly is a climate scientist, and how do they make sense of the complicated systems that rule our lives on the planet?
It could save the U.S. $77 billion (or more) in healthcare costs and reduce each person’s greenhouse gas emissions by nearly 500 pounds per year.
4. Chicago saw no snow in January or February.