ContributorNetwork - Severe weather once again struck last week in the Southeast, with three tornadoes in New Orleans and up to 7 inches of rain in Mississippi. Seems like every other week lately we've had extreme weather somewhere in the world, whether it be snowstorms, flooding, tornadoes, cold -- and don't forget heat (but that was last summer). Scientists say some of this weather may be due to global climate change, but how can that be and what is the difference between weather and climate anyway? Some facts:

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