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SUVs emit more climate damaging gas than older cars do, study finds
(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.
Curious how fuel efficiency holds up over time. Does a 10, 20, 30 year old car averaging 10K miles a year still basically get the same efficiency as a new one?
It can. It would require the engine to be a good production version (which it may be if it has the miles and hasn't already had problems), good maintenance through its life, and a bit of luck. Would most cars, probably not. There's too many variables to cause original efficiency to decline, one big one being typical abuse and neglect.