bike pollution is slightly more than nil just because of the CO2 we breathe out while riding
Technically, the CO2 animals exhale is carbon neutral because it’s from plants you eat (or your food eats). Unless you’re eating petroleum derived products of course.
I say technically because while the plants themselves are carbon neutral, modern food production and distribution, especially meat production, still has a large carbon footprint. So your breath is only truly carbon neutral if you foraged for food in the forest on foot.
Don’t forget that many small propeller driven aircraft run on leaded gas, and it’s a formulation of leaded gas that has 10x the lead that motor fuel used to.
But, didn’t you hear the Midgey guy who invented TEL like 100 years ago? You can safely breathe it and even wash your hands in it! (said right after he got lead poisoning)
Small aircraft have a carbon equivalent to large cars. My plane is from 1961 and has a fuel economy of 15mpg as the crow flies (arguably closer to 25mpg because of straight line measurements versus winding roads that can almost double the distance), seats 4 people comfortably, and flies at 160 mph.
Hmm, interesting. I had the opposite impression. Maybe from discussion of private jets? I wonder how commercial jets vs. private jets vs. light aircraft fare – similar to cars vs. buses, perhaps? I haven’t actually dug much into this subject :\
That’s right, bike pollution is less than walking (or running) pollution in terms of CO2 per mile travelled. Cycling typically burns ~⅓ of the calories compared to making the same journey on foot and there’s a direct link between calories burnt and CO2 produced.
Cycling at 12mph takes roughly the same energy as walking at 4mph. You emit the same CO2 per minute, but get there in ⅓ of the time. Running at 12mph takes 3 times the effort of cycling at 12mph. You’ll get there in the same amount of time, but breath out 3 times as much CO2. Bicycles are more efficient than our own two legs - how cool is that!
I’ve got to ask, though—how is breathing CO2 pollution? Aren’t we just taking in air, removing the oxygen, and exhaling the waste gases? Isn’t there the same net CO2 afterwards?
Have I misunderstood something as simple as breathing? Please say no.
You haven’t misunderstood it! You’re just coupling cellular respiration with photosynthesis, which on the surface seems to balance to net zero – 6 CO2 molecules and sunlight create 1 glucose molecule, and we break down 1 glucose molecule for energy and generate 6 CO2 molecules.
There’s one big factor though which isn’t immediately obvious, and that’s the rate of reaction. The chemical equations say nothing about how many molecules are consumed per second. In order for the net CO2 to be zero, they’d need to consume and generate CO2, respectively, at the same rate, which isn’t the case.
It’s actually a really good thing, because photosynthesis happens faster. Plants are net negative CO2 because of that. What we’d need to complete this comparison now is how much CO2 a human generates by existing, and we can determine how many plants are needed per human to have the same net CO2.
Cycling has carbon emissions if you factor the additional calorie intake needed to power your bike. :| Which will vary widely depending on your size, diet, and food source. Is it still a more sustainable form of transportation? Probably, but maybe not in extreme cases (like a 300-lb person eating beef daily flown in from the other side of the planet, versus, a tiny two seater electric car power off of solar energy, using batteries sourced from recycled materials) and it certainly isn’t 0 impact.
Also, for extra pedantism, carbon emission are not pollution (in the sense that it doesn’t poison the life forms directly), but it is a GHG which causes harm to the environment too.
If you factor calorie intake of the bike rider you need to do the same for other forms of transportation. And if you account for the amount of exercise people are supposed to get to stay healthy there’s no additional calorie intake whatsoever.
Plane pollution is not that much worse than a car. Depending on what metric you measure it can be better (planes are more fuel efficient and thus less CO2. Small planes like the picture generally use lead fuel and old engine designs that pollute more) on long trips.
Nearly all land near small runways and airports that fly planes using AvGas will have lead contamination. That’s because lead is still used in most aviation fuels a consumer plane would use. Runways are also required to have and use PFAS in firefighting foam for emergencies. Training and system tests will dump that stuff in the surrounding area.
Unless these fine folks have A380s they’re paying a hefty premium for lead exposure and PFAS in their water and soil.
Lead is only one factor of pollution though. You will note that i acknowledged it exists. There is no objective way to say what is the most important factor or how you compare them.
No, planes are not more fuel efficient, even driving alone a car.
The reason why it costs more to go by car is due to many reasons, especially the higher cost of fuel at petrol stations.
You’re only taking into account pollution and i bet you with the barrier of entry and cost accounted there would be less pollution from flying compared to driving.
I think they’re trying to say that less people would fly than currently drive due to the cost of flying. Although, if we subsidized personal planes at the same rate that we do personal vehicles I’m not entirely sure that flying would continue to be so expensive.
It’s quite simple really. Less people would be able to fly, so those that can’t will just stand still in confusion until they die from starvation. The remaining population would be the small fraction who were able to afford to fly. Net loss in pollution.
Why not? Probably because:
Bike pollution: .
Car pollution: oooooooooo
Plane pollution: OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO OOOOOOOOOO
(bike pollution is slightly more than nil just because of the CO2 we breathe out while riding)
Speak for yourself, I bike with a bag on my head to capture my emissions.
Don’t worry, your body will release all that carbon when you die.
What about the emissions from the other end?
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Technically, the CO2 animals exhale is carbon neutral because it’s from plants you eat (or your food eats). Unless you’re eating petroleum derived products of course.
I say technically because while the plants themselves are carbon neutral, modern food production and distribution, especially meat production, still has a large carbon footprint. So your breath is only truly carbon neutral if you foraged for food in the forest on foot.
So once again: return to monkee
Don’t forget that many small propeller driven aircraft run on leaded gas, and it’s a formulation of leaded gas that has 10x the lead that motor fuel used to.
But, didn’t you hear the Midgey guy who invented TEL like 100 years ago? You can safely breathe it and even wash your hands in it! (said right after he got lead poisoning)
Then he went on to make Freon.
Small aircraft have a carbon equivalent to large cars. My plane is from 1961 and has a fuel economy of 15mpg as the crow flies (arguably closer to 25mpg because of straight line measurements versus winding roads that can almost double the distance), seats 4 people comfortably, and flies at 160 mph.
Hmm, interesting. I had the opposite impression. Maybe from discussion of private jets? I wonder how commercial jets vs. private jets vs. light aircraft fare – similar to cars vs. buses, perhaps? I haven’t actually dug much into this subject :\
It’s probably plane with propeller, not jet engine
Breathing isn’t pollution
Depends who
oof
But some people are a waste of oxygen
They don’t cycle
I gave up flying to have kids. Probably worse for pollution
Walking pollution: …
That’s right, bike pollution is less than walking (or running) pollution in terms of CO2 per mile travelled. Cycling typically burns ~⅓ of the calories compared to making the same journey on foot and there’s a direct link between calories burnt and CO2 produced.
Cycling at 12mph takes roughly the same energy as walking at 4mph. You emit the same CO2 per minute, but get there in ⅓ of the time. Running at 12mph takes 3 times the effort of cycling at 12mph. You’ll get there in the same amount of time, but breath out 3 times as much CO2. Bicycles are more efficient than our own two legs - how cool is that!
I feel like it should be … for the amount of gas I release while cycling.
😂
But, do that people have light aircrafts or motherfucking Boeings 787?
Planes still require leaded gasoline and they are the largest contributor or airborne lead pollution in the US, probably the world.
No, they don’t. It’s like saying all cars require leaded gasoline. They can work on it, but it’s banned in all countries.
as if rich people care about how much they pollute
I’ve got to ask, though—how is breathing CO2 pollution? Aren’t we just taking in air, removing the oxygen, and exhaling the waste gases? Isn’t there the same net CO2 afterwards?
Have I misunderstood something as simple as breathing? Please say no.
You haven’t misunderstood it! You’re just coupling cellular respiration with photosynthesis, which on the surface seems to balance to net zero – 6 CO2 molecules and sunlight create 1 glucose molecule, and we break down 1 glucose molecule for energy and generate 6 CO2 molecules.
There’s one big factor though which isn’t immediately obvious, and that’s the rate of reaction. The chemical equations say nothing about how many molecules are consumed per second. In order for the net CO2 to be zero, they’d need to consume and generate CO2, respectively, at the same rate, which isn’t the case.
It’s actually a really good thing, because photosynthesis happens faster. Plants are net negative CO2 because of that. What we’d need to complete this comparison now is how much CO2 a human generates by existing, and we can determine how many plants are needed per human to have the same net CO2.
Thank you! What a great explanation. I’m always amazed by how much cooler things are than I expect.
Please accept this lemmygold: 🥇
Cycling has carbon emissions if you factor the additional calorie intake needed to power your bike. :| Which will vary widely depending on your size, diet, and food source. Is it still a more sustainable form of transportation? Probably, but maybe not in extreme cases (like a 300-lb person eating beef daily flown in from the other side of the planet, versus, a tiny two seater electric car power off of solar energy, using batteries sourced from recycled materials) and it certainly isn’t 0 impact.
Also, for extra pedantism, carbon emission are not pollution (in the sense that it doesn’t poison the life forms directly), but it is a GHG which causes harm to the environment too.
If you factor calorie intake of the bike rider you need to do the same for other forms of transportation. And if you account for the amount of exercise people are supposed to get to stay healthy there’s no additional calorie intake whatsoever.
deleted by creator
Plane pollution is not that much worse than a car. Depending on what metric you measure it can be better (planes are more fuel efficient and thus less CO2. Small planes like the picture generally use lead fuel and old engine designs that pollute more) on long trips.
I do love having heavy metals rain down on me from the sky so rich cunts can entertain themselves.
Nearly all land near small runways and airports that fly planes using AvGas will have lead contamination. That’s because lead is still used in most aviation fuels a consumer plane would use. Runways are also required to have and use PFAS in firefighting foam for emergencies. Training and system tests will dump that stuff in the surrounding area.
Unless these fine folks have A380s they’re paying a hefty premium for lead exposure and PFAS in their water and soil.
Lead is only one factor of pollution though. You will note that i acknowledged it exists. There is no objective way to say what is the most important factor or how you compare them.
No, planes are not more fuel efficient, even driving alone a car. The reason why it costs more to go by car is due to many reasons, especially the higher cost of fuel at petrol stations.
You’re only taking into account pollution and i bet you with the barrier of entry and cost accounted there would be less pollution from flying compared to driving.
… what?
I think they’re trying to say that less people would fly than currently drive due to the cost of flying. Although, if we subsidized personal planes at the same rate that we do personal vehicles I’m not entirely sure that flying would continue to be so expensive.
It’s quite simple really. Less people would be able to fly, so those that can’t will just stand still in confusion until they die from starvation. The remaining population would be the small fraction who were able to afford to fly. Net loss in pollution.
Flying is expensive and you need a license that’s substantially harder to get than a driver’s license.
Yes, that’s correct. I’m not doing a serious study here, just summarizing the general sentiment I’ve observed.