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Hydrogen for Transportation Didn’t Fail Just Once in 2025. It Failed Everywhere.
(cleantechnica.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.
Well its hard to beat fossil fuel in terms of energy density.
And if there were no externalities, that'd be just fine. But we're far from that wonderful state.