51–60 of 93 posts
Would be a good franchise. People probably prefer if CO2 was removed in their cities and not at some location kilometers away.
And to scale to a impactful level this will also require a very large amount of new, clean electricity generation...
Earlier quoted context omitted.
About half the mass of a tree is carbon. Seeds cost a couple cents. Plant a big tree (oak, let’s say) in an area where it’s unlikely to burn down and it’s probably good for 1000kg of carbon storage. Comes with a lot of other benefits too.
This is addressed on the website. I think at scale afforestation becomes a very risky prospect financially and requires a much larger amount of land putting biodiversity at risk and infringing on agriculture as apposed to the proposed CO2 remove technology. The cited paper for this on their website is unfortunately paywalled but I would be really interested in finding out more about this.
Can we destroy bitcoin first?? https://twitter.com/bascule/status/1234493080583143424?s=20 Bitcoin energy consumption hits a new all time high of nearly 9GW, comparable to Chile, a country with 18M people. Carbon footprint is ~37 Mt CO2 annually, about that of New Zealand. And yet it still does ~4 transactions per second...
Can we destroy bitcoin first?? https://twitter.com/bascule/status/1234493080583143424?s=20 Bitcoin energy consumption hits a new all time high of nearly 9GW, comparable to Chile, a country with 18M people. Carbon footprint is ~37 Mt CO2 annually, about that of New Zealand. And yet it still does ~4 transactions per second...
My longer comment on this point: https://news.ycombinator.com/item?id=19193938
Can we destroy bitcoin first?? https://twitter.com/bascule/status/1234493080583143424?s=20 Bitcoin energy consumption hits a new all time high of nearly 9GW, comparable to Chile, a country with 18M people. Carbon footprint is ~37 Mt CO2 annually, about that of New Zealand. And yet it still does ~4 transactions per second...
Mining is pretty centralised, and most players keep secret exactly how efficient their hardware is - and you can bet it'll end up much more efficient than publically available hardware.
If I've calculated correctly, this service costs $1100 per ton. A flight from New York to London emits about 1 ton of co2. The site talks about averages, but averages can be deceiving. Most people don't fly, and those that fly fly a lot. If you fly, you should probably try to overshot the average (by a lot) when you offset.
Is that number per passenger?
Would be a good franchise. People probably prefer if CO2 was removed in their cities and not at some location kilometers away.
You need clean, low-cost electricity near your city to support this. And to scale to a impactful level this will also require a very large amount of new, clean electricity generation...
But how big is the benefit otherwise?
Earlier quoted context omitted.
I flew from UK to Canada recently, and KLM was offering to "offset my CO2 emissions" for something stupid like $5. Surely....that's not actually a thing? What can they do for $5 that would offset so much CO2?
absolutely nothing. If the cost of carbon removal was 5$/ton, we wouldn't be having this climate change problem whatsoever.
Earlier quoted context omitted.
+0 tonnes is not equivalent to -1 tonne of C02 emission, because maths. Reducing current C02 levels is more difficult and expensive than just reducing C02 output, and has a greater impact on overall reduction, but both are moves in the right direction.
> +0 tonnes is not equivalent to -1 tonne of C02 emission, because maths. Right, but we're talking about -1 tonne (reducing emissions) vs -1 tonne (taking carbon out of the atmosphere) and last I checked, -1 tonne is equivalent to -1 tonne. > Reducing current C02 levels is more difficult and expensive than just reducing C02 output, and has a greater impact on overall reduction It makes sense to me that it's easier/ch…
-1 tonne (active output) is not equivalent to -1 tonne (overall C02 levels)
It's splitting hairs over what we consider to be better. Either is an improvement that I am happy to see.