Last week, an American-Israeli company that claims it's developed proprietary technology to cool the planet announced it had raised $60 million, by far the largest known venture capital round to date for a solar geoengineering startup. The company, Stardust, says the funding will enable it to develop a system that could be deployed by the...

This is today's edition ofThe Download,our weekday newsletter that provides a daily dose of what's going on in the world of technology. Why the for-profit race into solar geoengineering is bad for science and public trust -David Keith is the professor of geophysical sciences at the University of Chicago and Daniele Visioni is an assistant...