I didn't get a chance to post this in the other thread before Goldilocker got her hands on it.
Here's another nail in the blame-the-sun explanation for global warming. Analyses of daily min and max temperatures have shown that nighttime low temperatures are increasing while daytime high temperatures aren't changing much at all. If you're wondering how the sun can possibly have an effect on nighttime temperatures but not daytime temperatures, give yourself a cookie. On the other hand, that pattern is consistent with an increased greenhouse effect. Imagine that.