Tunnels and How They Are Built: Immersed Tubes

I’ve always been fascinated by the process of building tunnels …

Immersed tube is what it sounds like: constructing sections above ground that are then immersed and connected together.

Venice is an Engineering Marvel, Far More Impressive Than You Thought

Using engineering genius the Venetians — refugees from nearby towns seeking shelter from Visigoths and later Attila the Hun around 500-550 AD — turned a series of swampy islands into a real city and then into the global center of commerce by the 9th century, well before the time of Marco Polo in the late 13th century.

https://youtu.be/77omYd0JOeA?si=QcsfQ_SwjlqkKk0H

As the population grew they encountered the usual problems with growing cities — fresh water and waste disposal — and once again employed engineering genius to solve them in simple, effective and efficient ways.

Venice was the capitol of the Republic of Venice, for 1100 years a global power until conquered by Napoleon in 1797.

Another “Great Lake” Besides the Five We Already Knew

The Great Slave Lake in Canada, in the Northwest Territories, is over 2,000 feet deep, deepest in North America.

https://youtu.be/vZ8HQadZ__I?si=R6KkoIjOSezFUKKr

I have never heard of it. Learn something new every day!

And yes, the name seems a little odd but it’s named after a family named “Slavey”. Also kinda odd, but then lots of names are odd when you really think about it …