3 ms·
I guess the main problem is the fact that it took 800,000 years to sequester 3000 ppm worth of CO2 out of the atmosphere, or roughly 3 ppb per year on average.
by Sharlin 7y ago
I guess the main problem is the fact that it took 800,000 years to sequester 3000 ppm worth of CO2 out of the atmosphere, or roughly 3 ppb per year on average. And that was when there was a lot more CO2 to sequester than now.
- kijin 7y agoWe only need to sequester about 140 ppm of CO2 this time. It would still take tens of thousands of years at the natural rate, but we could probably increase the growth rate a hundredfold by carefully selecting high-sequestration cultivars, pumping them full of nutrients, and harvesting them at just the right interval to maintain optimal production. At least it sounds much more promising than the CO2-capturing contraptions I've seen on HN over the years.