Global warming deniers demonstrate that a little bit of knowledge mixed with lots of willful obfuscation is a very dangerous and unreasonable thing.

Another day, another debacle around the public's perception of global warming...

A new conspiracy theory is swirling around Climategate which blames Russia for hacking and cherry-picking potentially questionable emails.

The Climategate e-mails reveal nothing more than scientists frustrated with predatory denialists and their cherry-picked, bad faith arguments and demands .

Responding to climate change denialism and conspiracy theories with apocalyptic hyperbole is turning away the people who need to be persuaded that global warming is a real problem.

Sample cores from the planet's polar ice clearly show the difference between natural warming patterns and our toxic handiwork.

Are we about to see another short ice age as solar activity plummets?

Science-illiterate politicians spent their week proudly showing their ignorance in Congress.

The more people are being scared about global warming, the less they want to do to help stop it.

Just because it's cold outside in your part of the world doesn't mean global warming isn't happening.

Global warming denialists found a new culprit for the rising temperatures. Of course, they're wrong.