Uh, we are pretty close to the 1.8x pre-industrial CO2 concentration threshold the abstract lists, and despite all the good news with renewable energy, that alo

Uh, we are pretty close to the 1.8x pre-industrial CO2 concentration threshold the abstract lists, and despite all the good news with renewable energy, that alone isn't enough to stop us passing that threshold. Concrete and cows, even if we solve aviation's fuel problems and return to wind for ocean shipping.