A tiny change in a molecule’s geometry completely changes its effects on the human body. How We Made This Video (Ever & David Talk About Drugs): Thanks also to our supporters on ___________________________________________ If you want to learn more about this topic, start your googling with: Enantiomers: Molecules that are mirror images of each other. Chirality: A geometric property that makes a molecule non-superimposable on its mirror image. Methamphetamine: A central nervous system stimulant. Levmetamfetamine: The new name for the left-handed version of methamphetamine, which acts as a vasoconstrictor. Carvone: A terpenoid found in many essential oils. ___________________________________________ Credits (and Twitter handles): Script Writer: David Goldenberg (@dgoldenberg) Video Illustrator: Ever Salazar (@eversalazar) Video Narrator: Ever Salazar (@eversalazar) With Contributions From: Henry Reich, Alex Reich, Kate Yoshida, Emily Elert, Peter Reich Music by: Nathaniel Schroeder: _________________________________________ Like our videos? Subscribe to MinuteEarth on YouTube: Support us on Patreon: Also, say hello on: Facebook: Twitter: And find us on itunes: ___________________________________________ If you liked this week’s video, we think you might also like: Breaking Bad: ___________________________________________ References: Lodish H, Berk A, Zipursky SL., et al. “The Making or Breaking of Covalent Bonds Involves Large Energy Changes”. Molecular Cell Biology. Section 2:1 (22). Retrieved from: Wallach, J. “A Comprehensive Guide to the Clandestine Chemistry of 'Breaking Bad'” Vice. (2013). Retrieved from: . Thanks to the following experts for their input and feedback: Jason Wallach, Vice writer and chemist Donna Nelson, University of Oklahoma chemistry professor and technical advisor to ‘Breaking Bad’ Adam Braunschweig, CUNY chemistry professor () Justin Dragna, University of Texas chemistry professor