If you're going to try to base your opinion on what's being delivered to you, my suggestion is to consider a wide variety of publications from all sides of the argument.
It's a balancing act between the people who have the most to gain from drilling, and the people who have the most to lose from drilling. And often, the loud environmental lobby is not living in it, does not have much to lose from it, and stands everything to gain from telling you the sky is falling. Just as the oil companies have everything to gain from telling you nothing is wrong, ever.
What I find the most reliable source of info is the oilpatch workers. They're living in it. Hell they're being doused in it. They're more familiar with the geological formations, the chemicals, the casing, etc., than any of the loudmouths arguing the issue on tv.
Try hunting down trade publications for oil patch guys.