If we would like to use an "ecological" or at least the most-resource-saving protocol on Internet for exchanging text and files and which is secure, what could it be?

Gopher is quite simple, but has no security.

Gemini integrates with TLS, but doesn't allow to know the file's size before downloading. I think it is better to be able to choose to download according to the file size.

HTTPS allows maybe too much overhead and too much linked resources.

What is more ecological? Having services installed on a virtual server at a hosting provider or having a little computer like a Raspberry Pi at home?

At the hosting provider, as every servers are shared, there can be some savings if a lot of people are using the same servers.

On the other side, a Raspberry Pi has low power, so it doesn't consume much.

What would be the energy cost and temperature effect if everyone would have a Raspberry Pi at home?

"Computing, Climate Change, And All Our Relationships" by Nabil Hassein

"We as technologists have to see ourselves in the broader context of these political struggles which have already been taking place. And so we have to remember that there are no purely technical solutions to political problems."

deconstructconf.com/2018/nabil

Qowala's Mastodon

The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!