this post was submitted on 23 Feb 2025
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submitted 1 day ago* (last edited 14 hours ago) by [email protected] to c/[email protected]
 

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[–] [email protected] 3 points 5 hours ago (2 children)

Human beings literally exhale CO2. This makes me curious what the actual carbon efficiency is when using a calorie to CO2 analysis factoring in the carbon footprint of the diet needed to fuel said travel.

Because IIRC carnivores are only 10% efficient, so this feels like a complicated problem. And then of course the carbon footprint of the manufacturing of various methods of transport and break even points over what periods of time.

[–] [email protected] 3 points 3 hours ago (1 children)

This is an argument for ebikes, though not the strongest one, I think. The carbon output per mile traveled on an ebike is actually a bit lower than a regular bike because the food you eat has a carbon output. Yes, this includes charging the ebike from a coal power plant.

It does output more CO2 during initial manufacturing, though. Never does quite catch up with a regular bike over their expected lifetime. Both are better than cars and it's not even close.

[–] [email protected] 1 points 1 hour ago

Interesting, I never knew that was an argument for ebikes, but as you say, if they never break even it's a moot point. Unless... Perhaps having the ebikes promoted more cycling over driving, then perhaps it changes it enough.

[–] [email protected] 2 points 4 hours ago (1 children)

The only important carbon part is the carbon used in transporting and growing the food in the form of fuel. We're not releasing trapped carbon when we're eating food as the only way we would save carbon in that situation is if we grew the food and buried it. Worrying about raw energy efficiency gets nonsensical because soon you'll be factoring in the solar energy conversion efficiency between growing and eating plants vs growing and burying plants to turn them into oil.

The better point is just that a bicycle is an incredibly efficient machine for moving a person in terms of energy input to work done compared to the hunks of metal cars are.

[–] [email protected] 1 points 1 hour ago (1 children)

Well the meat industry is a large source of emissions isn't it? So if our meat consumption increased due to increased caloric intake, that should have a carbon impact right?

[–] [email protected] 1 points 50 minutes ago* (last edited 36 minutes ago)

Sure but if you're using anything but carbs and fats to power exercise you're doing it wrong.

[–] [email protected] 2 points 4 hours ago
[–] [email protected] 9 points 8 hours ago (1 children)

Bikes dont contribute to climate change

[–] [email protected] 4 points 7 hours ago

Well, I understand what you mean but they do a little. Metal and rubber production are the obvious parts. Compared to a car that burns fuel it's meaningless ofcourse.

[–] [email protected] 14 points 12 hours ago (4 children)

because conservatives are fat

[–] [email protected] 1 points 22 minutes ago

They conserve their fats

[–] [email protected] 1 points 5 hours ago (1 children)

I was worried this wouldn't be politicized and reduced to red v blue and red bad, but you saved the day.

[–] [email protected] 1 points 5 hours ago (1 children)
[–] [email protected] 2 points 5 hours ago

Unsure if that's actually true but regardless it is fact that red is more rural.

[–] [email protected] 0 points 4 hours ago

I'm a fat cyclist.

[–] [email protected] 6 points 11 hours ago (1 children)

FWIW as an avid cyclist I've been yelled at numerous times by car drivers, and it's always skinny middle-aged dudes smoking cigarettes and driving well-dented vehicles. I've always wanted to be yelled at by a fat person so I can shout "enjoy your third heart attack" at them but it's never happened.

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[–] [email protected] 8 points 11 hours ago (16 children)

Because showing up to a client meeting dripping in sweat on a 103 degree day is considered to be poor form. Because I got a new job and don’t have an extra two hours in my day to ride a bike back and forth, and moving isn’t in the cards. Because I have to carry a couple kids and all the crap the goes along with them.

[–] [email protected] 10 points 11 hours ago

because the US sucks ass and the entire world just does what the US does is also sucking of the ass.

It's not that I disagree with you, it's that we can do better and we're not.

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[–] [email protected] 4 points 10 hours ago (1 children)

Y’all would like Ivan Illich.

[–] [email protected] 1 points 21 minutes ago

Or Vladimir Iliich.

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