The U.S. Environmental Protection Agency is in the early stages of launching a debate about climate change that could air on television – challenging scientists to prove the widespread view that global warming is a serious threat, the head of the agency said. The move comes as the administration of President Donald Trump seeks to roll back a slew of Obama-era regulations limiting carbon dioxide emissions from fossil fuels, and begins a withdrawal from the Paris Climate Agreement – a global pact to stem planetary warming through emissions cuts. “There are lots of questions that have not been asked and answered (about climate change),” EPA Administrator Scott Pruitt told Reuters in an interview late on Monday. “Who better to do that than a group of scientists… […]