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A hydrogen-powered air taxi flew 523 miles emitting only water vapor
(www.popsci.com)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
1.That's where it normally comes from in the industry. I later made an assumption that this will maybe change 2-3.My point was, all energy has a cost, including environmental one. Even if you put it in an uninhabitable area, you still have to manufacture components and install the plant in a remote area (which is expensive and requires ton of landscape engineering and logistics with a very real and large footprint), and then transport hydrogen to the destination.
That's where it comes from presently because we haven't started producing significant amounts of green hydrogen yet. "This tech is useless because we aren't doing it yet!"
Constructing large solar and wind arrays in remote / uninhabitable areas is not free, but the land is "free" because in many cases it's not suitable for any other use. I think a lot of people dreaming of a wind & solar renewable future underestimate the physical area required to capture enough sunlight to power everyone's EVs.
Scaling mostly reduces economic costs, not environmental ones (latter primarily through better logistics).
Exactly! And we'll need even more if we want to use hydro. That's my point, besides the fact that building cars is extremely wasteful to begin with.