erwan
erwan t1_j5y1oox wrote
Reply to Researchers unveil the least costly carbon capture system to date - down to $39 per metric ton. by PNNL
I have the feeling the cost shouldn't be in $ but in energy used, right?
Because at the bottom line this is what really matters - we release CO2 to the air because it's getting us energy, so what would be the energy cost of capturing back?
Maybe you think it doesn't matter because we're capturing CO2 with renewable energy, but renewable energy isn't completely carbon-free (when you take into account creating and shipping the equipment) and that renewable energy could have been used to replace carbon generating energy.
erwan t1_je501n7 wrote
Reply to comment by [deleted] in Why are there multiple species of various life forms, but humans only have one? Are there other complex single-species organisms? by CyberOGa3
They are still the same species, the reason why they are so different from one other (compared to humans for example, who also have different skin colors, hair colors, faces types etc) is that we artificially bred them into those multiple races.
If we were to do the same for humans and specifically breed only redhair people with long limbs, only tall thin black skin people, etc., we could also get to more extreme physical differences between human populations.