How the Hippies Saved Physics: Adventures with Bell's Theorem, Then and Now

In this talk I will describe the historical questions that led me to write my book, {\it How the Hippies Saved Physics}. I will summarize some of the main findings, with a focus on how topics like Bell's theorem, and research on the foundations of quantum theory more broadly, moved from the margins to the mainstream of physics research. I will also reflect on the catalytic role that the historical project has played in my own, more recent research, including the recent ``Cosmic Bell" experiments.