This morning Jeffrey Hall, Michael Rosbash, and Michael Young were awarded the 2017 Nobel Prize in Physiology or Medicine for their work on circadian rhythms. How do these 24-hour internal clocks work? Here’s a peek at what’s going on in the brain at the molecular level, as drawn by Cynthia Turner for the article “The Tick-Tock of the Biological Clock,” by Michael Young (Scientific American, March 2000). Check out the full article for more graphics.
ABOUT THE AUTHOR(S)
Jen Christiansen is senior graphics editor at Scientific American. Follow Christiansen on Twitter @ChristiansenJen