“What we are now doing to the world… by adding greenhouse gases to the air at an unprecedented rate… is new in the experience of the Earth. It is mankind and his activities which are changing the environment of our planet in damaging and dangerous ways.”
“We all know that human activities are changing the atmosphere in unexpected and in unprecedented ways.”
Is global warming real or imagined? Although the news media make this sound like a difficult and contentious question, the basic science is actually quite easy to understand. So for anyone who wonders what to believe, this primer should help you understand the truth behind the headlines.
Announcing the Global Warming National Tour!