And the White House gave Shell the license. In his first term, President Obama mostly ignored climate change, and he ran for re-election barely mentioning the subject until Hurricane Sandy made it unavoidable in the closing days of the campaign.

Theoretically his second term was going to be different. The president has stepped up the rhetoric, and he’s shown some willingness to go after domestic greenhouse gas emissions. His new regulations on coal-fired power plants will be helpful, as will his 2012 rules on fuel efficiency for cars and trucks. And his nonbinding pledge that America will cut emissions in future decades may make the upcoming climate talks in Paris less of a fiasco than earlier talks in Copenhagen.

But you can’t deal with climate on the demand side alone. If we keep digging up more coal, gas and oil, it will get burned, if not here, then somewhere else. This is precisely the conclusion that a study in the journal Nature reached in January: If we’re to have any chance of meeting even Mr. Obama’s weak goal of holding temperature rise to 2 degrees Celsius, we have to leave most carbon underground. That paper, in particular, showed that the coal reserves in the Powder River basin in the West and the oil in Canada’s tar sands had to be left largely untouched, and that there was no climate-friendly scenario in which any oil or gas could be drilled in the Arctic.

And yet Mr. Obama — acting on his own, since these are all executive actions requiring nothing from Congress — has opened huge swaths of the Powder River basin to new coal mining. He’s still studying whether to approve the Keystone XL pipeline, though the country’s leading climate scientists have all told him it would be a disaster. And now he’s given Shell the green light, meaning that, as with Keystone, it will be up to the environmental movement to block the plan (“kayaktivists” plan to gather this weekend in Seattle’s harbor, trying to prevent Shell from basing its Arctic rigs there).

This is not climate denial of the Republican sort, where people simply pretend the science isn’t real. This is climate denial of the status quo sort, where people accept the science, and indeed make long speeches about the immorality of passing on a ruined world to our children. They just deny the meaning of the science, which is that we must keep carbon in the ground.