Alexandria Ocasio-Cortez actually said...

it is fair to conclude that industry--fossil fuel industry lobbyists are largely responsible for our failure to act on climate change a gene...

they knew about the scientific basis of the greenhouse effect. They knew that this was true, but... their primary goal was to sow doubt.

there's been a coordinated effort to confuse the American public about dire threats to their health and livelihoods.

the fossil fuel industry and corporate lobbyists and misleading the public about the scientific consensus on climate change.