Like HowStuffWorks on Facebook!

Tornadoes Demystified, Global Medicine, and Why the President's First 100 Days Matter


HowStuffWorks NOW HowStuffWorks
HowStuffWorks NOW HowStuffWorks

Tornadoes' centers leave you cold and breathless; now we know how. Underuse and overuse of particular medical treatments is a global problem. Plus, the history and politics behind the importance of a president's first 100 days.


More to Explore