My opponent’s plan is nothing but smoke and mirrors: he’s simply pulled his numbers out of the air to make it look like he can balance the budget without new taxes.

My opponent's plan is nothing but smoke and mirrors: he's simply pulled his numbers out of the air to make it look like he can balance the budget without new taxes.

At issue is the balance between two natural phenomena. One is beneficial: as carbon-dioxide levels in the air rise, plants grow more quickly, absorbing more carbon in return.