Global warming irrefutable fact

I have read the recent letters about the validity of global warming and feel the need to add my own two cents by saying that I am a fervent believer in global warming.

There is very strong evidence for this. In fact, it is irrefutable!

Every morning, the sun comes up, which warms the Earth's surface. Conversely, when the sun goes down, the planet cools down. This principle of warming and cooling actually extends to there being six months of warming and six months of cooling every year.

Ian Valentine

Yuma