In May, Steven made a quick stop at the Smithsonian Institution in Washington, D.C., to give a talk on the History of Barbecue. Planet Barbecue is pictured above in all its fiery glory.

Here’s Steven with a slide of “Lucy,” an australopithecus, and the first human ancestor to walk upright.

Homo erectus circa 1.8 million years BCE. The first human to use fire to cook meat—in other words, the inventor of barbecue.