Warmer waters also give rise to other nasty stuff, like algae blooms.
Scientists say that the bloom was caused by heavy rainfall that washed larger than normal amounts of chemical fertilizers, pesticides, and other pollutants into the lake. As climate change progresses, severe precipitation, in places that don’t usually get lots of rain, will become more common. This puts every single lake, river, and stream in jeopardy of the same algae bloom that recently devastated the Great Lakes region.
Humans didn't cause any of this, and we can't stop it either. We may be using too much water, but we aren't affecting the overall climate. The surface of Mars is getting hotter - who's causing that?
the only thing i feel sorry about at this point is that we're currently taking a lot of other species and habitat down with us (the holocene extinction) and it's only going to get worse. OTOH there's still about 500m years left for the earth's atmosphere to support complex life. so i hope it comes back strong one day... minus us clever dumbasses.
good luck with that, kiddos. :)
Basically man-made climate change is a load of horsebollocks.