this post was submitted on 23 Feb 2025
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[–] [email protected] 8 points 1 day ago (1 children)

This seems like something Chat Gippity might actually be of some value:

The CO₂ exhaled by a person riding a bike is tiny compared to a car’s emissions. Let's break it down:

Human CO₂ Emissions from Biking

  • A resting human exhales about 0.7 kg of CO₂ per day (~29 g per hour).
  • Moderate cycling increases breathing rate, and a cyclist might exhale around 4x more CO₂ than at rest.
  • This comes to ~116 g of CO₂ per hour.
  • A cyclist at 20 km/h would emit ~5.8 g of CO₂ per km.

Car CO₂ Emissions

  • The average gasoline car emits ~200-250 g of CO₂ per km.
  • Even efficient cars emit over 100 g of CO₂ per km, which is still far more than a cyclist.

Comparison

  • A cyclist exhales ~5.8 g CO₂ per km.
  • A typical gasoline car emits ~200 g CO₂ per km.
  • A cyclist produces ~30-40 times less CO₂ than a car per km.

Even when considering food production emissions for fueling the cyclist, biking is vastly cleaner than driving.

[–] GaMEChld 1 points 19 hours ago

Good idea, thanks for that! I really need to do that more often. I do it sometimes, but still keep forgetting I have that handy. Took me a while to remember I had Google in my pocket when smart phones came out too.