Get comprehensive coverage of the California issues you care about the most in one free, weekly email. Sign up for WeeklyMatters. Map of active wildfires burning across California. Explore the history ...

A sleek white aircraft became the first independently developed jet to break the sound barrier Tuesday, tearing through the air tens of thousands of feet above the Mojave Desert and a crowd of ...

Boom Supersonic's XB-1 demonstrator plane just went supersonic in the skies over California's Mojave Desert, making it the first civil aircraft to break ...

A breakthrough Chinese chatbot has sparked alarm about the country’s advances in artificial intelligence (AI) and wiped close ...