Phytoplankton absorbs carbon dioxide for photosynthesis, and there’s a relatively easy way to boost the world’s populations.

  • Most of the legitimate “block sunlight” proposals involve cloud seeding or spreading long-lasting particulates high in the upper atmosphere. The goal of these projects is to reflect 1-2% of sunlight, which would significantly cool the climate, but plants would hardly notice. In fact, organisms like reef systems would greatly appreciate it, as they’re dying off at an extraordinary rate.