Earliest Microbial and Molecular Fossils?

Earliest Microbial and Molecular Fossils?

Available on Prime Video, The Great Courses Signature Collection
S1 E31: See how three rare and distinctive ancient rock types-black carbon-rich chert, black carbon-rich shale, and mound-like stromatolites-provide tantalizing evidence for life on Earth more than 3 billion years ago. Focus on the researchers who have blazed the trail in this challenging field.