See Candidate Page Joe Biden, Climate Climate tweets on Biden 6/27/19 CLIMATE CHANGE: Former Vice President Joe Biden, the current Democratic leader in most polls, shares environmental proposals.#DemDebate #Decision2020 | WATCH LIVE: https://t.co/Vb4XOrOaG8 pic.twitter.com/gSYH14dNai— NBC 6 South Florida (@nbc6) June 28, 2019