Digital Trends: Geoengineering is risky and unproven, but soon it might be necessary

“Imagine the azure blue skies of summer fading to a hazy white as light-scattering aerosols are injected into Earth’s upper atmosphere. Imagine a planet covered with giant artificial chemical sponges leeching gases out of the air that we breathe. Imagine filling the Earth’s oceans with millions of pounds of calcium bicarbonate to alter the levels of acidification.”