Video: PragerU-What They Haven't Told You About Climate Change

Since time immemorial, our climate has been and will always be changing. Patrick Moore explains why “climate change,” far from being a recent human-caused disaster, is, for a myriad of complex reasons, a fact of life on Planet Earth.

In just the past 2000 years:

• the Roman Warm Period (warmer than today)
• the cooler Dark Ages
• the Medieval Warm period
• the Little Ice Age (which drove the Vikings out of Greenland)
• and a gradual 300-year warming.

That's a lot of changes. And of course, none were caused by humans.