Cool Science Radio welcomes New Yorker staff writer Andrew Marantz who spent the last three years going into the worlds - even sometimes the homes — of online extremists, propagandists, internet trolls, and white supremacists who have become experts at using social media to advance their agenda. He also explored the world of the sometimes naive and recklessly ambitious tech entrepreneurs of Silicon Valley who created these platforms that have allowed misinformation to alter the way we think, the