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"Turn off that camera during virtual meetings"

Video is 96% of the carbon footprint of a call.

One hour of videoconferencing or streaming emits 150-1,000 grams of carbon dioxide.
(For reference, a litre of gasoline burned from a car emits about 2,350 grams. You can drive about 10 km with one litre.)

purdue.edu/newsroom/releases/2

I found some more accurate figures:

- For an average UK car, the CO2 emission is 141 g / km
- For new cars (2021) that figure is 113 g / km

For "urban driving", fuel consumption is typically 50% higher than for "extra-urban" driving. So even a new car still consumes 141 g /km when in urban mode.

@wim_v12e And this mastodon instance probably runs on a single pc somewhere. Its better than facebook (probably)

@Linux_in_a_Bit My fedi instance runs on a Raspberry Pi.
A large component of the emissions is the network between the user and the server. But fediverse is mostly text, that is very low bandwidth compared to audio and certainly to video.
Still, I wish we'd use a more frugal protocol for the fediverse. Running on top of https with JSON is far from optimal in terms of information content per bit.

@wim_v12e @vfrmedia perhaps the better takeway would be STOP BURNING COAL but, welp, poland exists

@piggo @vfrmedia Of coarse that should be the goal.
But the projection is that even by 2040, globally only 30% of electricity will be from renewables + nuclear. So in the short term, reducing the energy consumption is the best way to reduce burning of fossil fuels.

@wim_v12e @vfrmedia That doesn't sound so good... 30% is not much. I'm still cautiously optimistic about ITER, if that works. that is the way to the future. And to the stars

@piggo @wim_v12e

even UK had to turn a coal power station back on for a few days due to unusual weather conditions (not quite enough sun for solar nor wind for windpower)

@vfrmedia If it would only be for a few days per year that would not be a massive problem. Basically, we need to cut emissions globally by half in 20 years. So there would still be quite a bit of headroom for fossil fuels.
The problem is that with business as usual, emissions will rise rather than drop.

@piggo

@piggo @vfrmedia It is, I agree, but it is very unlikely that it will be in production by 2040 as it is not even working in the research stage right now.

@wim_v12e If you drive 10 km with a liter you should change car before concerning about these other problems

@rastinza The average in the UK in 2019 was 0.6 l for 10 km.

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