I posted this a few years ago but thought some new to the site may not have read the post. The App below the video is a great resource to use against Climate Change Denier misinformation.
The Koch Brothers & Their Amazing Climate Change Denial Machine
Here is an excellent resource on climate change science and rebutting global warming misinformation: [skepticalscience.com]
They also have an app for iPhone and Android phones.
iPhone App:
[skepticalscience.com]
Android App:
[skepticalscience.com]