Almost weekly, here and worldwide, we see changes to our climate that are shockingly powerful. And we have only one reliable tool strong enough to fight back: the power of markets. A price on carbon, like the global rise in temperature, would affect every corner of our country, moving quickly and relentlessly, transforming our nation toward clean energy. As gas-fired electricity costs rise, utilities will switch to wind. As oil gets pricier, electric car sales will explode.