Erika Santoro is an associate producer at CNBC.com. She produces original content and shows for CNBC Digital including "The Tech Bet" and "Unboxed." You can follow her on Twitter: @ErikaSantoro.
Carly Fiorina rejects the proposed coordinated global effort as the answer to climate change.
Republican presidential candidate Carly Fiorina, the former CEO of Hewlett-Packard, fires back at front-runner Donald Trump, one of her most vocal detractors.