Startups want to geoengineer a cooler planet. With few rules, experts see big risks
April 21, 2024 at 14:30 PM EDT
SAN JOSE, Calif. — One morning late last year, an RV pulled into a parking lot on the outskirts of Silicon Valley. Inside it was a blue Ikea bag with huge balloons, and metal tanks full of helium and sulfur dioxide gas. The mission was led by Luke Iseman, a 41-year-old serial entrepreneur with a … Source
