-
117
El Niño and Lightning
How can El Niño conditions cause increased lightning?
-
25
What is a polar vortex?
And how does it cause such a freeze?
-
28
Tornado!
These are the most violent storms on Earth. Can we forecast them even better?
-
17
What can cause severe flooding?
How do massive floods happen?
-
34
How big was Typhoon Haiyan?
Satellite images show just how huge it was.