More and more climate scientists are supporting experiments to cool Earth by altering the stratosphere or the ocean
As recently as 10 years ago most scientists I interviewed and heard speak at conferences did not support geoengineering as a way to counteract climate change. Whether the idea was to release large amounts of sulfur dioxide into the stratosphereto supercharge algae that breathe in carbon dioxide, researchers resisted on principle: don’t mess with natural systems because unintended consequences could ruin Earth.
“We do need to try the techniques to figure them out,” says Rob Jackson, a professor at Stanford University, chair of the international research partnership Global Carbon Project and author of a book on climate solutions called. “But doing research does make them more likely to happen. That is the knotty part of all this.”. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.
For years Jackson refused to endorse DAC, but he now supports research. He has come around because warming is rising relentlessly, along with fossil fuel use, creating dangerous floods, droughts and heat waves that are killing people worldwide. “We are out of time and options,” he says, “an unfortunate outcome of our inaction on climate.”
When Ken Caldeira, a longtime climate researcher at the Carnegie Institution for Science’s Department of Global Ecology at Stanford, started to look into geoengineering in 2000, he says, older researchers warned him that delving into the taboo topic would put his career at risk. Small studies did ensue, but public opinion against geoengineering mounted and most work stopped.report.
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