This new passive cooling paint reflects sunlight, emits heat and mimics sweating to cool buildings without air conditioning, even in the tropics.

You know the feeling when you use a product for the very first time, and you realize within seconds that you're absolutely in ...

The number of satellites in orbit, especially in low-Earth orbit, has massively increased in the last decade. This has ...

Light streaks caused by passing satellites mar images taken by the world's most expensive telescopes. The problem is set to ...

We more safely roam city streets after dark. The city of Las Vegas dumps an enormous amount of light into its environment, turning the night sky above into a seemingly blank canvas. Photograph by ...