It’s hard to green the desert. Take China, or Africa’s Sahel region, for example. Their “Great Green Walls,” grand projects to beat back encroaching desert by planting trees, have required ...

OpenAI unveiled an updated version of its AI system GPT-4o that can generate more realistic images, the result of a year-long effort with human trainers. GPT-4o replaces DALL-E 3 as the default ...