| Title | : | A Brief History of Geologic Time |
| Duration | : | 12 minutes, 8 seconds |
| Uploader | : | PBS Eons |
| Added On: | : | 06 November, 2017 |
| Views | : | 4.0M times |
| Likes | : | 0 |
| Source | : | YouTube |
PBS Member Stations rely on viewers like you. To support your local station, go to httpto.pbs.orgDonateEons↓ More info below ↓By looking at the layers beneath our feet, geologists have been able to identify and describe crucial episodes in life’s hi
