Louisiana floods: a new normal?

Aug 16, 2016
The flooding has been described as "historic" and "unprecedented." How long before it happens again?
A man navigates a boat of rescued goats past a partially submerged car after flooding on August 16, 2016 in Gonzales, Louisiana. As many as 20,000 people have been rescued following unprecedented floods in the southern US state of Louisiana.
BRENDAN SMIALOWSKI/AFP/Getty Images