$300 billion. That’s the money needed to stop the rise in greenhouse gases and buy up to 20 years of time to fix global warming, according to United Nations climate scientists. It’s the gross domestic product of Chile, or the world’s military spending every 60 days.
The sum is not to fund green technologies or finance a moonshot solution to emissions, but to use simple, age-old practices to lock millions of tons of carbon back into an overlooked and over-exploited resource: the soil.
“We have lost the biological function of soils. We have got to reverse that,” said Barron J. Orr, lead scientist for the UN Convention to Combat Desertification. “If we do it, we are turning the land into the big part of the solution for climate change.”
Rene Castro Salazar, an assistant director general at the UN Food and Agriculture Organization, said that of the 2 billion hectares (almost 5 billion acres) of land around the world that has been degraded by misuse, overgrazing, deforestation and other largely human factors, 900 million hectares could be restored.
Returning that land to pasture, food crops or trees would convert enough carbon into biomass to stabilize emissions of CO2, the biggest greenhouse gas, for 15-20 years, giving the world time to adopt carbon-neutral technologies.
“With political will and investment of about $300 billion, it is doable,” Castro Salazar said. We would be “using the least-cost options we have, while waiting for the technologies in energy and transportation to mature and be fully available in the market. It will stabilize the atmospheric changes, the fight against climate change, for 15-20 years. We very much need that.”
The heart of the idea is to tackle the growing problem of desertification — the degradation of dry land to the point where it can support little life. At least a third of the world’s land has been degraded to some extent, directly affecting the lives of 2 billion people, said Eduardo Mansur, director of the land and water division at the FAO.
Original Article: https://time.com/5709100/halt-climate-change-300-billion/