whatever230522's comments

I can not understand how carbon capture can be proposed as a solution for reducing the atmospheric CO2 levels. At best, it can be used at high-intensity production sites to reduce the amount of CO2 added to the atmosphere.

We are currently pumping every day 35 billion tons of carbon into an atmosphere that already has umpteen billions of tons of carbon that needs to be removed. We are never going to have machinery or technology that can remove carbon at the necessary scale. And not only is the volume an impossibility, the energy requirements are, too: it will require more energy to remove the carbon than it provided in the first place.

Best I can figure is we need to use fast-growing solar-powered organics. Replace corn with hemp, or grow algae, something like that, and sequester the mature product at an active subduction zone. Return it back into the deep earth.

If the average temperature were 0°C there would be no life on earth because all the water would be frozen. No humans, at any rate.

If the average temperature were above 40°C there, again, would be no life on this earth, because proteins start coagulating at about that temperature, weird vent hole creatures at the bottom of the oceans exempted.

A temperature change of 1.5°C is a big change in the context of temperatures that support life, let alone temperatures that allow humans to have the foods and outdoor fun that we’ve enjoyed this past few hundred thousand years.