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A comment on Launch HN: Prometheus (YC W19) – Remove CO2 from Air and Turn It into Gasoline. Parent comment

Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by rmcginnis on Tuesday May 07, 2019 @10:41AM (#19849864)
Yes, we're actually agnostic on CO2 source. To get to scale we'll need to use CO2 from direct air capture, but we could by the collection from someone else.
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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by simonh on Tuesday May 07, 2019 @11:39AM (#19850519)
I can completely see the logic. If this only works for point sources it may not scale sufficiently to be viable long term. So that capability needs to be proved out early in order to demonstrate it's long term value to investors.
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Re:Launch HN: Prometheus (YC W19) – Remove CO2 from Air and ... by sova on Wednesday May 08, 2019 @01:24AM (#19856075)
how many point sources do you need to make atmospheric extraction viable? i'm thinking it's like a million
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