The Download: solar geoengineering’s future, and OpenAI is being sued

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. Solar geoengineering startups are getting serious Solar geoengineering aims to manipulate the climate by bouncing sunlight back into space. In theory, it could ease global warming. But as interest in the idea grows,…