Global Warming

The Friar over at Reason & Revelation links (1, 2) today to a very interesting documentary challenging the prevailing opinion on human-induced climate change. Produced by a researcher named Hayward who works with, among others, the American Enterprise Institute, the video shows that much of the hype about global warming being propagated by Al Gore, among others, is just that--hype.

Several interesting points:
- There's good evidence for a medieval (pre-industrial) warm period that mirrors the present warming trend.
- Contrary to most people's assumption, environmental quality in most of the US is getting better, not worse.
- The most dire predictions about rise in global temperature are based on wildly implausible forecasts about industrial and economic growth--such as North Korea's exceeding US economic levels by 2100.
- The most conservative predictions about rise in global temperature are based on current emissions growth levels that have basis in actual fact.

There seems to be general consensus that global warming is happening. The science available does back that up. What there is considerably less consensus about--despite what many journalists and politicians would have us believe--is why that warming is taking place, to what extent it will contiue or worsen, and how drastic its effects will be. I'm not yet convinced that the most prominent voices' message--that humans are destroying the planet--is anything more than hype with little or not basis in fact.