this post was submitted on 08 Apr 2025
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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: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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Oxford Professor: Cycling is 10 times more important than electric cars for reaching net-zero cities (theconversation.com)
submitted 2 weeks ago by dwazou@jlai.lu to c/climate@slrpnk.net
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[–] bstix 3 points 2 weeks ago

I don't think it's required to be a professor to tell this. It's pretty obvious that a 2 ton car is worse for the climate than a 15 kg bicycle. They also do completely different things though.

The article seems to bash on electric cars for no particular reason.

You know what would be even more environmentally friendly than even bicyling to work? Staying at home. Working from home could save a lot more and doesn't require infrastructural investments.

Anyway, the percentages mentioned are still quite low. It would make a larger difference to focus on other kinds of transport than personal vehicles.

There are larger fish to catch. One of them is the ships. A lot of them transport fuel. Changing personal transport to electric cars, regardless of how efficient they are or not, will also have the effect of lowering the amount of fuel to be shipped around. The environmental impact of distributing fuels is larger than the impact of personal vehicles, so by all means, we should change as many industries and transport forms to electricity instead of fuel, including personal vehicles.