Many Americans don't truly understand what the greenhouse effect is and just how it is that excessive carbon dioxide amplifies it, thus creating climate change.
Here is a wonderful simple demonstration that shows us how it works. It is only a four minute video; but, it tells us more about global warming than four hours of what you're used to on the subject.
Pass this along to your friends, family and acquaintances.
And then watch the following sixteen minute TED talk on a simple solution for climate change: