On a sunny day in March 2020, researchers in South Africa discovered the bodies of two giraffes. From what they could tell, the giraffes had died a few days earlier. But the cause was a mystery. To understand what happened, producer Dean Russell turned to the subreddit AskScience. He discusses his findings with Endless Thread co-hosts Amory Sivertson and Ben Brock Johnson.

Credits: This episode was written and produced by Dean Russell. Mixing and sound design by Matt Reed. Amory Sivertson and Ben Brock Johnson are the co-hosts.