What on Earth?
Strange Symbols in the Desert (3x13)
Air date: Feb 14, 2017
An amateur archaeologist stumbles open strange symbols scratched into the Kazakhstan Desert; CIA surveillance photographs show what looks like a giant Star of David on the island of Cuba; and a lake in the Brazilian rain forest that turned bright pink.
- Premiered: Feb 2015
- Episodes: 163
- Followers: 23
- Running
- Science Channel
- Tuesday at 21