Anonymous ID: 9e07ae June 22, 2021, 2:01 p.m. No.13959160   🗄️.is 🔗kun

Ezra A. Cohen Retweeted

US National Archives

@USNatArchives·1h

This year marks 150 years since scientist, physician, and explorer Ferdinand Hayden's expedition to the Wyoming and Montana Territories. Hayden is credited with spurring Congress to make #Yellowstone the first National Park.

 

https://museum.archives.gov/featured-document-display-first-national-park-yellowstone-and-hayden-survey

@Interior @NatlParkService

 

3:00 PM · Jun 22, 2021

https://twitter.com/USNatArchives/status/1407413272983244807

Anonymous ID: 9e07ae June 22, 2021, 2:25 p.m. No.13959286   🗄️.is 🔗kun

The Antikythera Mechanism: A Shocking Discovery from Ancient Greece.

2,929,689 views

Feb 25, 2016

 

As part of an international team, Dr Tony Freeth has been a central figure in an extraordinary voyage of discovery: every new revelation has reinforced a sense of shock about this highly sophisticated ancient Greek astronomical calculating machine. It is one of the true wonders of the ancient world.

 

1:48:50

https://youtu.be/xWVA6TeUKYU