Go to (genuine climate scientist) Judy Curry's blog and read this article. At the end, you'll find that Dr. Curry was interviewed for the Associated Press' article about how the heat wave and derecho were caused by 'global warming.' However, her comments -- questioning the connection -- did not make it in.
Dr. Curry is extremely qualified to opine on this subject. That fact her comments were not in tells you about the pro-global warming bias at the Associated Press.
ADDITION: Dr. Roger Pielke, Sr. adds his views.