5 ms·
The carbon source is CO2 in the air. Digesting the food creates CO2, which completes the cycle of carbon neutrality.
by sacred_numbers 4y ago
The carbon source is CO2 in the air. Digesting the food creates CO2, which completes the cycle of carbon neutrality.
- gpcr1949 4y agoYes, I read a bit on this (apparently real after all) business and I saw CO2 is the carbon source. It just confused me the promotional website does not even mention CO2. When they called Solein carbon neutral, I assumed they are talking about the product and process, not the entire cycle (in the same way you might call planting trees CO2-emission negative), though this makes sense. In any case, I still find it to be a pretty strong misrepresentation to call this protein synthesis out of "thin air".
- washbrain 4y agoPlanting a tree is carbon neutral if you do nothing to sequester the carbon. It's negative in the short term, but neutral over the life of the tree (more or less).
- wizofaus 4y agoTrees live long enough that that "short term" can still be 100s of years, and buying ourselves 100 years is probably the best we can hope for anyway at this point. And trees are capable of automatically spawning new trees, so a self-sustaining growing tree population should surely count as carbon negative...
- drjasonharrison 4y ago...and then the drought, followed by the fire... The amount of carbon in the atmosphere, that used to be underground in coal, oil, and gas. More than 170 gigatons. (approximately, this is just the 40% higher concentration than historical high point, based on 412 ppm co2 in atmosphere vs 300 ppm historical high point, back of the envelope). This seems like a lot of land, a lot of trees, and would have to include harvesting and storing the trees after 100 years.
- washbrain 4y agoAs someone who manages hundreds of acres of forest - most trees won't live that long because we'll harvest them or they'll die to disease and wildfire. Reforesting an area would be carbon negative, and eventually the first will saturate. It's much much more carbon negative to produce biochar, biotar, or mass timber buildings.
- wizofaus 4y agoFair enough, good to know. Hadn't heard of bio-tar before.