What do vaccines, stigma, climate change and sex have in common? They all relate to our public health.    Covid-19 isn’t the only public health crisis we’ve faced. It’s not even the only one we face right now. What led us to this moment, what have we learned, what did we get right (and wrong), and how can we do better?   As we navigate a pandemic, and a moment that’s rife with conspiracy theories and misinformation, Chelsea is getting the facts.    Each week on In Fact, Chelsea Clinton sits down with experts, activists and a few surprising guests who share Chelsea’s passion for science, evidence and yes, facts. Along the way, they’ll open the world of public health through shared stories, their work, connect the dots between the past and present moment, and help us understand that, now more than ever, public health affects us all.