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Airlines should tell UK customers the carbon impact of flights, watchdog says
(www.theguardian.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.
Why not both?
Isn't this article about UK?
You'd absolutely need to do both, unless you wanted all sorts of malformed incentives.
Generally speaking, the revenue from a pigouvian tax needs to be spent mitigating the problem that generates the revenue. Otherwise, you end up with something of a Cobra Problem, wherein excess consumption is seen as a revenue driver that the state subtly promotes.
I'm just speaking from personal experience.
If you want to talk shit about the UK, you can always point to HS2. Cancelled out of spite by the outgoing Conservative government. Chronic mismanagement of the rail network has been a lead weight around the British economy for decades.