Barack Obama: “Climate change is a fact, and we have to act with more urgency to address it.”

And there’s no reason to suggest that we can’t get through this one either.

The success of this experiment was never a given.

That was fantastic. I was a little tall for it.

Of course, we did not accomplish everything we set out to do. No administration does. Some of the exhibits reflect unfinished business, in some cases, my own shortcomings and mistakes, in some cases because - as a sign I kept on the…