Carbon adjustments aren't helping the planet - four ways to fix them

Achieving "zero" carbon emissions requires more than just limiting greenhouse gas emissions. Carbon dioxide must also be withdrawn from the air , to offset continued releases from sectors where emissions are difficult to reduce, such as cement and steel production. There are many ways to achieve this - from capturing CO ₂ directly from the air by chemical means to planting trees and sea grass or seeding the oceans with iron to stimulate the growth of photosynthesizing phytoplankton. Even with full decarbonization, billions of tons of CO will need to be sequestered each year _2. Markets for "carbon offsets"—credits that pay someone else to reduce atmospheric carbon on your behalf—can be an effective way to manage global CO removal _{2 .} But they will only work if the prices and incentives are right, and there are currently two major problems with setting them up. (Philip W. Boyd, Lennart Bach, ... Christian Turney)