My megaproject ideas are mostly pretty standard. I'd build a high speed rail network across North America, and build and expand metro and regional rail systems in and around every city. I'd turn all cities and suburbs into fifteen-minute cities. I'd decommodify housing, and build ten million units of public/social/non-market housing, mostly three bedroom units. I'd link those last three policies together by building TODs around the new Metro and rail stops. And I'd build bicycle networks in every town and city and connect them to the TODs. I'd build bridges and walkways across skyscrapers. I'd put a bidet in every American toilet (uses less water than toilet paper apart from being more comfortable). Fiber internet in every home. A heat pump in every home. An induction stove in every kitchen. Phase out fossil fuels and power everything with Pumped Storage Hydropower and Geothermal. I'd make the US go Metric.
But my truly crazy, obsessive idea would be to bring back the French Revolutionary calendar. Or I'd purge all French influences from English.
Aquarium glass isn't indestructible, it's just really thick acrylic. Large aquarium panels may be as much as 60cm/24 inch thick. They're rated to a certain level of pressure they can safely hold, and if the water was to go too much higher (as it might in a flood if it was in a lake or river) they will break.
Also, even if your river or lake has no pollution, you're not going to see too much, sediment, algae, and other natural aspects of the aquatic environment will cloud you from seeing the fish who won't want to hang out near the scary tunnel if they can avoid it.
prime example is that 82ft fish tank that exploded in Germany
I'm aware really. It seems I wasn't treating the post with the seriousness that people here expected.
Valid. I do like the idea of futurama tubes though. Sounds fun!
I was tempted to suggest those too, but selfishly I get vertigo so my travelling through transparent tubes is limited to aquariums and nonsense future tunnels.