More evidence than you can shake a hockey stick at

Last week, the NOAA published a must-read report outlining 10 climate indicators of global warming. A few days later, Dr James Powell published a must-watch YouTube video outlining many more lines of evidence for a warming world:

The video opens by listing the many groups that endorse the consensus that humans are causing global warming:

However, Dr Powell recommends you look at data and decide for yourself. At this point, he presents a whole bevy of climate indicators. Being a big fan of graphs, I'm going to have to delve into all his sources and publish some of these on Skeptical Science. Here's a taste of some of the evidence he presents:

All this is presented in a short 10 minute YouTube video. You can also check out more form James Powell's website. Definitely worth watching and spreading around.

UPDATE: let me head off the "ah but what's causing the warming?" comments - that question is addressed in 10 Indicators of a Human Fingerprint on Climate Change.

Posted by John Cook on Friday, 6 August, 2010

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