Hav

"CO2 is odorless, colorless, tasteless – it’s not a threat to human health in terms of being exposed to it. We create it as we talk back and forth. So, and if you go beyond that, on a net basis, there’s ample evidence that warming generically — however it is caused — is a net benefit to mankind."
-- Joe Barton R-TX

This ranks up there with 'a series of tubes'...

"CO2 is odorless, colorless, tasteless" - as is Sarin.

"it’s not a threat to human health in terms of being exposed to it" - a 100% concentration of CO2 will produce death in a little under four minutes.

"We create it as we talk back and forth." - Congress could hardly be considered harmless.

"So, and if you go beyond that, on a net basis" - Oranges are a citrus fruit grown in hot climates, therefore this potato....

"however it is caused" - <wink, fingergun to donors>

"is a net benefit to mankind." - It'll certainly help with overpopulation eventually.