This week we learn about a sex manual/midwifery book from 1684 and how the American Hippo Act forced two rivals from South Africa to come together for the greater good. A listener email explains why Pandas use horse manure to stay warm.

Episode Tabs:

When the Birds and the Bees Were Not Enough

https://publicdomainreview.org/essay/when-the-birds-and-the-bees-were-not-enough-aristotle-s-masterpiece/

American Hippopotamus

https://magazine.atavist.com/american-hippopotamus/

Listener Tabs:

Why is Bern the Capital of Switzerland?

https://www.swissinfo.ch/eng/politics/federal-city-_why-is-bern-the-capital-of-switzerland/44577476

Why Wild Giant Pandas Frequently Roll In Horse Manure

https://www.pnas.org/doi/10.1073/pnas.2004640117

Email your closed tab submissions to: 500opentabs@gmail.com

Support us on Patreon: https://www.patreon.com/500OpenTabs

500 Open Roads (Google Maps episode guide): https://maps.app.goo.gl/Tg9g2HcUaFAzXGbw7

Continue the conversation by joining us on Discord! https://discord.gg/8px5RJHk7a

SUPPORT THE SHOW and get 40% off an annual subscription to Nebula by going to nebula.tv/500opentabs

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

This week we finally unpack Charles Dellschau's forgotten aeronautical notebooks and learn how long-term nuclear waste warning messages are created. A listener email digs up the story of how the Brynlow shovel was dug up out of Alderley Edge but not identified as a Bronze Age tool until many decades later.

Episode Tabs:

Charles A.A. Dellschau Book

http://www.shishigami.com/srfa/Charles_Dellschau_FINAL.pdf

Inverse Archaeology: Sending a Message to the Future https://www.stochastication.com/2016/06/13/inverse-archaeology/amp/

Listener Tabs:

https://www.google.com/maps/d/u/0/viewer?mid=1l0CodEbSLsF0zj7i5SWJPJfvu9iNvi3f&hl=en&ll=34.42740297426141%2C-117.9767350680066&z=8

https://archaeology.co.uk/articles/opinion/magic-and-mining-at-alderley-edge.htm

Email your closed tab submissions to: 500opentabs@gmail.com

Support us on Patreon: https://www.patreon.com/500OpenTabs

500 Open Roads (Google Maps episode guide): https://maps.app.goo.gl/Tg9g2HcUaFAzXGbw7

Continue the conversation by joining us on Discord! https://discord.gg/8px5RJHk7a

SUPPORT THE SHOW and get 40% off an annual subscription to Nebula by going to nebula.tv/500opentabs

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Unfortunately the LA fires have forced us to delay recording, so here's a quick update about ways you can help followed by our last Patreon AMA that should be unhinged enough to hold you all over till next week. Stay safe friends!!

ANIMATION PPL & FRIENDS AFFECTED BY FIRES:

https://airtable.com/appugwkqKAVGDdeaJ/shrrujOu1GKwKAW0f/tblBTejpocYFoeauX

Email your closed tab submissions to: 500opentabs@gmail.com

Support us on Patreon: https://www.patreon.com/500OpenTabs

500 Open Roads (Google Maps episode guide): https://maps.app.goo.gl/Tg9g2HcUaFAzXGbw7

Continue the conversation by joining us on Discord! https://discord.gg/8px5RJHk7a

SUPPORT THE SHOW and get 40% off an annual subscription to Nebula by going to nebula.tv/500opentabs

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.