Did you ever fly over LA?
Tell me that man can't screw up the environment.
What data do you have that all the planets are heating up and in what relationship to the earth?
I agree that on a large scale, the earth may be warming. But I don't think humans are causing it. Just my opinion. What caused the ice to melt at the end of Ice Age....humans? What caused the Little Ice Age during the 1600-1700s? I'm sure humans are contributing to a degree, but I don't think that we are causing it, nor rapidly speeding it up. Water-vapor is more of a green-house gas than CO2. It just takes a few really abnormally hot years to get alot of water-vapor into the air to cause some warming.