59:40

Lecture 13 – Precambrian Earth and Life History The Proterozoic Eon Part 1

1:59:32

Lecture 17 – Mesozoic Life Part 1

2:11:10

Lecture 19 – Cenozoic Earth History Quaternary Version 2

3:04:28

Stellar Corpses: White Dwarfs, Novae, Neutron Stars, and Pulsars

1:48:25

Lecture 4 - Rocks Part 1

54:23

Were These The First Animals?

2:50:58

Göbekli Tepe - The First Temple On Earth? 10,000 BC // Ancient History Documentary

1:08:15

The Earliest Years Of Earth's 4.6 Billion Year History