I dunno about Lemmy, but there are some lightweight Mastodon-compatible servers under development on GitHub.
Also, I saw some tests from a Mastodon admin that showed huge decrease in server power by simply decreasing the retention time for cached media from the default. I forget the numbers, but I remember being shocked by them.
Is there any way to use it offline? My data cuts out when inside the supermarket, which has frustrated me with other web-reliant shopping list solutions
I’m not sure if they did furniture, but there was a European project I can’t find that had open source designs for a bunch of household objects. I think I saw it on notechmagazine, but there’s a lot to sift through there…
There is an EXCELLENT physics text book freely available that focuses on the physics of energy sources: https://escholarship.org/uc/item/9js5291m
It’s by Tom Murphy of “Do the Math” fame. Basically, unlimited perpetual growth runs afoul of basic physical limitations in shockingly short timeframes.
EVtopia just sounds like an electric car website to me