I still think you're asking the question in the wrong way. When you say true or false, you're implying that it is possible to know for an indisputable fact that said event is occurring. That's not how science works, unless you're a pure mathematician/logician.

First off, I'm not a climatologist, so I'm no expert on that particular question. But if you're asking me if it's true that roughly 97% of the world's leading experts in the field believe that, with current information, there is enough evidence to support a claim that the Earth's climate is experiencing a warming trend that is due to humans' impact on the planet, then you should see the first link I posted. That study answers that question in the affirmative.

Oversimplifying what the data suggests is a double edged sword. It makes it easier for laymen to understand, but it also forces a "dumbing down" of the information presented. When you hear politicians and media outlets blathering on about this, trying to spin it one way or the other, the bottom line is that they are quite simply unequipped to discuss the topic with any degree of accuracy. That's why we should leave it to the experts and not try to corner them into providing a response that is so watered down that it is essentially worthless. The better plan is to educate ourselves more so that we are able to understand what's really going on, instead of asking for the "I drew this with my crayon!" interpretation.

On a related note, I do know some people who know some people who are actual experts in the field, working at Oak Ridge. I'll see if I can get a simplified answer to your question - I'm actually curious to what the response is myself.