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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.
I like the other test that showed a full sized standard issue commercial aircraft was able to be retrofitted with a hydrogen tank and a special heat pump. That seems like a good avenue for development.