Everyone knows that in sevens anyone can beat anyone, but it was really surprising just how many times the underdog won.

BBC: Sevens Scots head Stateside

The national numbers have certainly moved in his direction since the Republican convention, and did - which is really just over a week ago, which is kind of surprising.

NPR: Grading Palin's TV Appearance

Coal and gas are still way bigger than oil or nukes in our grid, but my point is really just that an exponential curve can catch up with a linear one in a surprising way. 14% doubling every few years means we could be only a decade away from 100% clean energy.

FORBES: Stop Naysaying The Solar Industry And Get On The Bus!