Imagine a perfectly intact, six-inch humanoid skeleton with a pointed cone-shaped skull and only ten pairs of ribs. For years it was paraded in documentaries as undeniable proof of extraterrestrial life. The truth hidden in its DNA was far more human, and far more troubling.

This episode follows Ata, the tiny mummified body found in a Chilean ghost town in 2003. We trace how genetic sequencing dismantled the alien myth, only to ignite a fierce scientific and bioethical battle over how the remains were studied.

• How the harsh, dry Atacama Desert preserved the remains and fueled decades of speculation
• How Stanford geneticist Gary Nolan's sequencing proved Ata was a recent human female of indigenous South American ancestry
• The disputed 2018 finding of 64 mutations across seven skeletal-development genes
• The bi ...