President Obama's top science adviser, John Holdren, agreed that the e-mails should be thoroughly investigated. At issue is whether they provide evidence of scientific malfeasance, or just bad manners.
"Scientists are human, and from time to time they display defensiveness and bias and even misbehavior of some kinds," Holdren said. "They're like any other group of human beings. They're subject to human frailties.
I think the facts are not in on this particular case."
Holdren agreed that if the e-mails reveal inappropriate data manipulation, and that ended up in official reports,
obviously those reports would need to be corrected.
"However this particular controversy comes out,
the result will not call into question the bulk of our understanding of how the climate works or how humans are affecting it," he added.
Evidence from many different sources shows that the air and oceans are warming as a result of greenhouse gases humans are putting into the atmosphere. Jane Lubchenco, a scientist who heads the National Oceanic and Atmospheric Administration, gave a tabletop demonstration at the hearing to show how increasing carbon dioxide in the atmosphere is also making the oceans more acidic.
Those explanations didn't reassure some Republican members of the committee. In response, Rep. Jay Inslee (D-WA) said he was stunned by their skepticism.
He said if global warming is a fraud, it must be perpetrated by a conspiracy of scientists from all around the world.
"I just wanted to ask you if you're part of that massive international conspiracy," he said to the witnesses, adding with a note of sarcasm, "Are either one of your members of the Trilateral Commission, SPECTRE or KAOS? I just need an answer."
Holdren replied: "Congressman Inslee, I am not a member of any of those organizations, and I don't believe there's an international conspiracy. That would be an amazing thing indeed."
Holdren pointed out that national academies of science from all around the world accept the reality of human-induced global warming, as do other leading science organizations and the United Nations.
Inslee then noted that nobody else in the room had any other plausible way to explain why carbon dioxide is building up in the air and in the oceans. "And yet people are trying to gin up this controversy. You know why? It's not that they aren't intelligent. It's that they are afraid that we can't solve this problem."