this post was submitted on 22 May 2025
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[–] [email protected] 3 points 10 hours ago (3 children)

Can we please stop all planes that use fossil fuels?

[–] [email protected] 4 points 5 hours ago (1 children)

i wish, batteries are still too heavy to replace jet fuel, hydrogen could work weight wise, but too low density and you just don't have space in an airplane (you could design one but it'll be too big and have too much drag).

best possibility for now is biofuels. basically plug and play.

better yet, replace all major overland routes with high speed rail, much cheaper than flying anyways.

[–] [email protected] 0 points 3 hours ago

Sail boats work great.

[–] [email protected] 2 points 9 hours ago (1 children)

not realistically with our current technology

[–] [email protected] 0 points 3 hours ago (1 children)

Lol we had this tech for centuries

[–] [email protected] 2 points 2 hours ago (1 children)

We’ve had batteries with better energy density than fossil fuels for centuries?

Were the Roman’s just sitting on magic batteries but did nothing with them because no one had invented the iPhone yet?

[–] [email protected] 1 points 1 hour ago* (last edited 1 hour ago)

Nope. Sails. They work great for moving people and cargo across oceans.

No fossil fuels required