Living in the Uk we do not have the devastating weather that you have in the US, I cannot pretend to fully feel what you've been through.
The weather in the Uk is changing too, all the seasons are occuring 10 days earlier than usual - we've had Tornadoes in Torbay ( 30 miles up the road ) and in Cornwall (just across the river ), these were unheard of when I was a child.
All across the British isles wind farms are being erected and we're starting to harness Wave power - it has to be a better way.
I heard on a news report that the hole in the ozone layer has got smaller - so we are making some difference.
I think katrina was a lesson to the whole world.