Dr. Rosaly Lopes, Senior Research Scientist at NASA-JPL, and Carl Sagan Medal winner, on why now, more than ever, traditionally introverted scientists need to become better public communicators, as a means to combat the huge surge in fact-denial and scientific falsehoods spreading on social media, and her own recollections of Carl Sagan, the original Father of Communication in science. Dr. Lopes was in Singapore as part of the U.S. Department of State’s U.S. Speaker Program.