LonelyLarynx

It doesn't fit the bill perfectly but I've been using Obsidian with the Tasks and Day Planner plugins. Obsidian is no longer open source but I still like it because you have great control over your own data.

I use Syncthing to sync the notes between my phone and laptop (and select shared notes to the devices of my spouse).

The Day Planner plugins allows tasks to be time blocked / scheduled on a timeline of the day. There is also a week view and you can easily move from day to day.

You can sync your calendars so your calendar events automatically show on the timeline. Though I prefer to just check my calendar and enter the events manually.

The Tasks plugin lets you give tasks future or recurring due dates with some pretty flexible logic.

Aside from the day planning what I like the most is that I can also use this for journaling, to make project pages / dashboards, meeting minutes, and as a wiki. Take can live right with the appropriate information / context saving me from moving between multiple applications. I can save relevant attachments like emails in line with my notes and tasks just by dragging in the file (or directly dragging from an application like Outlook desktop).

In my opinion the sky is the limit with Obsidian. What I've described can feel a little rough around the edges but it works and the ability to build out your own process is unmatched. There are Kanban board plugins, drawing plugins (Excalidraw is amazing), and as for a mind map you can draw them or you can use built in view to see how all your notes link together.

I suggest watching some demo videos on Obsidian Day Planner plugin and Obsidian Tasks plugin, and Obsidian itself, and see what you think. You might be able to build out a system that works for you.

Well then use VLC and a remote control program like Unified Remote or KDE Connect and use your phone as a remote control for volume and mouse.

I second the recommendation of using Jellyfin.

Additionally you can use something like the Unified Remote app to make your phone control your computer instead of a mouse. Want to turn up the volume just use the volume rocker on your phone. You can also turn your phone screen into a large trackpad. Very convenient for watching media. I think there is an open source version called KDE Connect but I haven't used it yet myself.

You realize this is the free and open source software community right? Replying to a call for development support with a commercial closed source product isn't very helpful.

p.s. despite its "lack of developers" I've personally found Jellyfin to be superior to Plex with respect to its core functions.

Except that wireless headphones have more complexity, points of failure, and usually shorter life. Just avoiding batteries alone should give a longer life and do less environmental harm.

TL;DR: You're correct, in my professional opinion.

The catalyst in most hydrogen fuel cells are still too expensive and have a limited life. Hydrogen will mostly be sourced as a waste product from oil and gas extraction (though it could be done with clean electricity and electrolysis), that's why oil and gas companies are becoming so interested in pushing hydrogen (see the successful "clean" natural gas campaigns, but depending on how you measure it natural gas can result in more emissions than coal and is just a bunch of greenwashing. Same would happen with hydrogen in my opinion). Additionally, we'd have to build out an entire hydrogen delivery infrastructure that serves only that purpose. We'll just end up with commercial fuel stations like we have now. Fuel cells (for many fuels) can make sense in very remote applications, or industrial applications where specific waste gasses can be turned into supplemental electricity right on site.

Battery-electric on the other hand is much more flexible and fits into our existing infrastructure better. It's not just power dense batteries for cars; it's (maybe gravity) batteries for communities, safe and long-lived (maybe salt) batteries for homes, better batteries for our electronics. Research in one area can support improvement of the others. They all connect to the same electricity grid so the energy can be shared among applications. Batteries play a role in decentralizing and democratizing energy (today you can put PV on your house, charge your car or home battery, use your car to power your house in a power outage, etc). As mentioned we can use greener and cleaner batteries (even completely non-chemical) in some applications, and one day we can hopefully get to the point of using ultra- or super-capacitors in place of high-density chemical batteries. In the mean time we have batteries that work and are getting quite affordable, we can transition to this solution now without waiting for a miracle breakthrough, then continue to iterate the technology over time.