Take a trip through chemical space and time with C&EN's award-winning podcast: Inflection Point. Our show leans on C&EN's 100-year archive to trace today's headline topics back to their disparate and surprising roots. In each episode, David and Gina explore three lesser-known moments in science history that ultimately led us to current-day breakthroughs. With help from expert C&EN reporters, this show examines how discoveries from our past have shaped our present and will change our future. Subscribe to Inflection Point now on <a class="c-link" href= "https://podcasts.apple.com/us/podcast/inflection-point/id1804147797" target="_blank" rel="noopener noreferrer" data-stringify-link= "https://podcasts.apple.com/us/podcast/inflection-point/id1804147797" data-sk="tooltip_parent">Apple Podcasts</a>, <a class="c-link" href= "https://open.spotify.com/show/1dajV3XMJNL3i61U4LhNeh?si=E9U193_WRn-1UhwJNfaGBQ&nd=1&dlsi=6a2d33f46e82422a" target="_blank" rel="noopener noreferrer" data-stringify-link= "https://open.spotify.com/show/1dajV3XMJNL3i61U4LhNeh?si=E9U193_WRn-1UhwJNfaGBQ&nd=1&dlsi=6a2d33f46e82422a" data-sk="tooltip_parent">Spotify</a>, or wherever you get your podcasts.

Retinol: The magical molecule's bizarre history

Inflection Point traces emerging ideas in science to their surprising roots. With help from C&EN's vast, 100-year archive, we find the origins of modern breakthroughs, and tease out three different pieces of the puzzle that lead to our current moment.