How not to solve the climate change problem

Photo caption: This direct air capture plant in Iceland was designed to capture 4,000 metric tons of carbon dioxide per year. Photo credit: Climeworks 2021 via AP Photos. Article by Kevin Trenberth. The Conversation – July 20, 2022.

When politicians talk about reaching “net zero” emissions, they’re often counting on trees or technology that can pull carbon dioxide out of the air. What they don’t mention is just how much these proposals or geoengineering would cost to allow the world to continue burning fossil fuels. There are many proposals for removing carbon dioxide, but most make differences only at the edges, and carbon dioxide concentrations in the atmosphere have continued to increase relentlessly, even through the pandemic. […]

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