When Time Became History – The Human Era
https://www.youtube.com/watch?v=CWu29PRCUvQ
https://www.youtube.com/watch?v=CWu29PRCUvQ
https://www.youtube.com/watch?v=yiw6_JakZFc
https://www.youtube.com/watch?v=1-NxodiGPCU
https://www.youtube.com/watch?v=xaQJbozY_Is
https://www.youtube.com/watch?v=0FH9cgRhQ-k
https://www.youtube.com/watch?v=JXeJANDKwDc