Philipp Dettmer is the founder and head writer of Kurzgesagt, one of the largest science channels on Youtube with over fifteen million subscribers and one billion views. After dropping out of high school at age fifteen, Philipp met a remarkable teacher who inspired in him a passion for learning and understanding the world. He went on to study history and information design with a focus on infographics. After college, Philipp started Kurzgesagt as a passion project to explain complicated ideas from a holistic perspective. When the channel took off, Philipp dedicated himself full-time to making difficult ideas engaging and accessible.

A gorgeously-illustrated deep dive into the immune system that will forever change how you think about your body - how it works and why it is both your greatest ally and most dangerous enemy - from the creator of the popular science YouTube channel Kurzgesagt - In a Nutshell.