The Supreme Court listened to arguments about the EPA's authority to regulate carbon dioxide at their won discretion and a science puzzle was aired:
But Jonathan F. Mitchell, the solicitor general of Texas, which challenged the regulations along with other states, said a faithful interpretation of the statute would require that its permit requirements be imposed “on the corner deli or the Chinese restaurant or a high school building.”
“Congress does not establish round holes for square pegs,” he said.
Justice Breyer and Chief Justice John G. Roberts Jr. wondered if the law might reach high school football games.
Mr. Verrilli drew the line there. “Just an aside on the high school football game,” he said. “Human beings are actually net neutral on carbon emissions, and you will need a chemist to explain that to you.”
That seemed to hearten Justice Breyer. “This has been very helpful,” he said. “I learned I’m not a net emitter of carbon dioxide. Believe me, because that means I’m a part of sustainable development.”
Remember, we are talking about carbon dioxide; folks who have had the pleasure of spending time with large groups of teenage boys, as at a football game, may have questions about net methane emissions.
But as to carbon dioxide, humans are clearly exhaling more than they are inhaling. However, we are given a pass because of the overall food cycle; Slate explains:
Human beings do exhale almost 3 billion tons of carbon dioxide annually, but the carbon we exhale is the same carbon that was "inhaled" from the atmosphere by the plants we consume. (When we eat meat, we're still eating the same carbon, except that it passes through livestock on its way into our mouths and out into the atmosphere.) The only way to add to the carbon in the atmosphere is to take it from a sequestered source like fossil fuels—where it has been safe from the atmosphere for millions of years—and combust it. So breathe easy.
We se the same answer from these Spanish scientists:
As regards emissions, "human excrements have a net null effect on global warming, as they are offset by carbon fixation in photosynthesis. As a result, they do not contribute to increasing the concentration of CO2 in the atmosphere."
The EPA may have other problems with Friday Night Lights, but the human crowds won't be one of them.