Our experts score the debate: How Clinton beat Trump, round-by-round
Science Now

John Kitzhaber, Jay Inslee, Jerry Brown,

Oregon Gov. John Kitzhaber, Washington Gov. Jay Inslee and California Gov. Jerry Brown, left to right, attend a ceremony in San Francisco to sign an agreement to collectively combat climate change.
Marcio Jose Sanchez / Associated Press
Copyright © 2016, Los Angeles Times