NASA's $1.4 billion NEO Surveyor space telescope is designed to spot and track potentially hazardous asteroids, offering ...

Cities like Denver, Boston, New York, and San Francisco are facing budget crunches as tax revenues from office buildings fall and new expenses add up.

Artists’ tiny models imagine what a city might look like after humans are long gone. Lori Nix and Kathleen Gerber spent seven months building this minute replica of a New York City subway car.

Thanks to wildfires, hurricanes, and certain leaders trading threats of nuclear annihilation over Twitter, you've probably been thinking a lot about disasters recently — specifically how not to ...

Lake Elsinore, California wanted tourists — but not the kind that gridlocked its streets and trampled its mountainsides. The city is trying to learn from intense short-term overtourism to ...