The scientific excitement in comparing theory with data, and developing some understanding of global changes that are occurring, is what makes all the other stuff worth it.

The most difficult task, phase-out over the next 20-25 years of coal use that does not capture CO₂, is Herculean, yet feasible when compared with the efforts that went into World War II. The stakes, for all life on the planet, surpass those of any previous crisis. The greatest danger is continued ignorance and denial, which could make tragic consequences unavoidable.

We're running out of time.

Interference with communications of science to the public has been greater during the current administration than at any time in my career.

We are on the precipice of climate system tipping points beyond which there is no redemption.

Because cap and trade is enforced through the selling and trading of permits, it actually perpetuates the pollution it is supposed to eliminate.

I was lucky to grow up at a time when it was not difficult for the child of a tenant farmer to make his way to the state university.