Infographic: A lesson on tornadoes

The following infographic comes from and explains the kind of damage expected when tornado wind speeds are at varying levels.

This was released a day after tornadoes swept through North Texas, killing at least six people and injuring dozens of others.

Here’s the infographic:

Valerie Strauss covers education and runs The Answer Sheet blog.
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Valerie Strauss · May 16, 2013