Lew Richmond's latest post for the Good Men Project is about global warming.
Here's a link to it on his website.
Spoiler: the frog/boiling water thing is not true about frogs but it does seem to be true about people. Maybe frogs learned from people's constant suicidal myopia to notice the warning signs early and leap out of harm's way. Lew is one of many alert observers urging his fellow humans to notice the clear warning signs and do something about it.