The Download: the future of geoengineering, and how to make stronger, lighter materials

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology.

Why new proposals to restrict geoengineering are misguided

—Daniele Visioni is a climate scientist and assistant professor at Cornell University

The public debate over whether we should consider intentionally altering the climate system is heating up, as the dangers of climate instability rise and more groups look to study technologies that could cool the planet.