Global warming is real to the present depending on when one starts to count from. In the past the earth has been at times warmer than now and cooler than now.
Humans responsible? Human are clearly responsible for some global warming: E.g., light a match and warm the earth. But humans clearly are not responsible for all the quite wild changes in climate in the geological record before humans even existed. And it is tough to say that humans had much to do with the earth falling into the Little Ice Age or starting to come out of it.
Is current human activity significantly warming the earth? I have looked hard yet seen no credible reports that it is. No, I do not count Guru Ramaswami's 'radiative forcing' crapola at the center of the IPCC documents. For 'climate science', that is nearly all just a flim flam fraud scam by a closed group of people pushing their orthodoxy to push their own careers.
I know; I know: One of Al Guru's Yale profs liked to take vacations in Hawaii so put a CO2 sampling station there and has CO2 concentration data for some decades. Then the screaming started: "CO2 is a greenhouse gas, will 'trap' heat and warm the planet, and we will DESTROY THE EARTH." BS. CO2 only absorbs in three narrow bands, one for each of bending, twisting, and stretching of the molecule, and all three bands are out in the infrared. Net, CO2 doesn't absorb much energy and is trivial, a nit, compared with water vapor, methane, clouds, etc. The CO2 is just something to scream about.
My understanding is that the predictions of rapid warming by the 'climate scientists' over the past few decades never happened thus seriously hurting their credibility. Heck, the 'leading climate scientist' back in 1970 or so (I'll save the time to look up his name, claims, and date -- but you remember, it was a 'Newsweek' or 'Time' cover story) about 'global cooling'.
For the article, it seems to have gotten the memo: Don't talk about 'global warming' and, instead, talk about 'climate change'. So, jumping in with the media, the article seems to go along with the suggestion that human activity has caused climate change has caused extreme climate this spring caused many more than the usual spring tornadoes in the US and, in particular, ones aimed at population centers, all without any serious, numerical, historical data on tornadoes in the US. Sure: ABC, CBS, NBC, MSNBC, CNN, and PBS can get people up on their hind legs this way, but not me. So, the screaming is just flim flam to stir up hysteria.
I have seen no "organized disinformation campaign", and you provided no evidence of one.
It's not about a "campaign". Instead it's about the climate and solid evidence and science about the climate. So far, net, 'no worries, mate'. For the flim flam fraudsters, ROFL.
I used to debate all this nonsense on Reddit but gave up on Reddit and saw that mostly everyone saw that the global warming crowd was just pushing a fraud and quit listening. So, I quit arguing. So, I'm not going to dig out all my details on the 'radiative forcing' crapola at the center of the IPCC garbage, the NASA guy who makes so much noise, the good work done by the guy at MIT, the Hadley e-mail data, the 50 cent per KWH solar power in Germany, the wacko Al Guru graph that failed to notice that in the geological record from the Vostok ice core data the CO2 increased hundreds of years AFTER the temperature increased, etc. The whole thing is dishonest science and a flim flam fraud scam.
I've got good news for you: Relax. F'get about Al Guru, Cap and Trade, shutting down coal plants and, thus, wrecking the US economy, the polar bears, the whales, the rising sea levels, etc. Let the EPA enviro-wackos get real jobs and save the tax money. Let Icemelt Immelt find something useful to do. Let Al Guru find some more acolyte chicks to bed. Tell the UN IPCC to go back to railroad engineering. F'get about the fraud.
Give up on the morality play of human sin and evil and the classic dramatic trilogy of transgression, retribution, and redemption. If you like that trilogy, then listen to Wagner's 'Ring' or 'Parsifal' or Tolkien's 'Ring' or 'Star Wars'. Relax. After all, it's just a movie.