The oil companies have known about AGW since the 70s, at least:
More and more countries are preparing for the end of the Petroleum Age:
Worlds biggest oil companies all acknowledge AGW, carbon taxes and sees a future in renewable energies:
http://oilandgasclimateinitiativ...
GCI is a voluntary, CEO-led initiative which aims to lead the industry response to climate change. Launched in 2014, OGCI is currently made up of ten oil and gas companies that pool expert knowledge and collaborate on action to reduce greenhouse gas emissions.
“GCI was quick to identify “low-hanging fruit” opportunities to reduce the carbon footprint of energy consumed. Saving energy from being consumed has a privileged place on the low-carbon value chain. More efficient, low-carbon fuels and long-term carbon intensity reduction targets will see renewed interest in the years to come.”
SINOPEC (2nd largest in the world, from China) on AGW, carbon taxes and renewable energy:
Fighting Against Climate Change
Climate change is a major global issue for all humankind. As a responsible energy and petrochemical company, Sinopec regards it as its due responsibility to fight against climate change. We make efforts to shift the pattern of growth, optimize energy structure, develop and utilize low-carbon energy resources and promote energy saving and consumption reduction. We are speeding up study on commercial test of CO2 recovering, in order to reduce GHG emissions and better prepare to combat climate change.[...]
Chevron just agreed in court that humans cause climate change, setting a new legal precedent
CHEVRON’S LAWYER, SPEAKING FOR MAJOR OIL COMPANIES, SAYS CLIMATE CHANGE IS REAL
Just like Exxon, Shell oil knew about the danger of c02 emissions.
A trove of documents shows the oil company’s scientists urged its leaders to heed the warnings. That could now play into lawsuits over global warming
https://insideclimatenews.org/ne...
https://www.theguardian.com/envi...
http://www.climatefiles.com/shel...
SHELL OILs STARK AGW WARNING MOVIE FROM 1991:
1982:
EXXON OWN SCIENTISTS CONFIRMS OUR c02 EMISSIONS EFFECTS GLOBAL CLIMATE AND WARMS ABOUT FURTHER FUTURE DANGERS:
A new study shows how Exxon Mobil downplayed climate change when it knew the problem was real