this post was submitted on 03 Mar 2024
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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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Energy efficiency of active travel (walking, cycling, ebike) compared to an electric car (slrpnk.net)
submitted 6 months ago* (last edited 6 months ago) by silence7@slrpnk.net to c/climate@slrpnk.net
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[–] Donebrach@lemmy.world 3 points 6 months ago

I used to live in Boston, which in recent years has become very bike friendly and is actually setup to make sense using a bike for primary transport (fairly robust public transit for the US, physically pretty small), but now I live in a city in Massachusetts where the area has very little bike infrastructure, and the landscape is hills and valleys of hundreds of feet of varied elevation every half mile or so. Using a non-electric bike for daily errands / transport would be equivalent to running a marathon every time I need to pop over to the grocery store. The e-bike battery and range runs out so fast that i’m basically limited to a single specific errand every time I go out—no option for doing more than one thing. Also add to the fact that everything is designed around cars so amenities are not blocks away, but rather towns away.

The northeastern United States sees basically every type of weather so there are days where it’s wonderful to be out on a bike and days were it is a complete nightmare—when you have to get on your bike to get to work when its raining sheets or 10 degrees (Fahrenheit) outside and there is no other option it becomes a wretched ordeal.

My point is, beyond a very specific set of circumstances where weather, health, topography, public transit infrastructure and also the immense luxury of even being able to live in a city all line up, using a bike as a primary mode of transportation is completely useless solution.