None of the above.
On any issue you need to research carefully and listen to both sides. You need to learn a substantial amount about the subject yourself, then you can usually determine who's lying.
Here's an article I like:
http://notrickszone.com/2013/01/03/oxfor...
For the whole story on the man-made Global Warming HOAX, watch this:
The Great Global Warming Swindle
Stupid question. it is not scientific to go by sources.
The evidence/data/information must be evaluated, from whatever and all sources available.
D.
And I'd recommend in particular: http://www.withouthotair.com/
None of them, they all have a predetermined viewpoint.
A) a group seeking to change government policy toward renewable energy
B)a business that produces energy from nonrenewable resources
C) a business that sells renewable energy equipment
D)an expert with a background and expertise in renewable energy