Stardust Solutions says its tiny spheres can reflect the sun’s rays without harming people or the environment. Critics say ...

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.

Cool Earth Solar specializes in commercial and residential solar installations. It offers components from Enphase Energy, Maxeon and Tesla Powerwall. Service areas extend across parts of northern ...

In one NOAA report in the box marked "project or activity designation," Iseman wrote: "Cooling Earth." While Make Sunsets was launching balloons in the parking lot, on the edge of a county park, a ...