Military planners spent years treating high-energy lasers as a science project. In 2025, that changed, as directed-energy ...

A movement to help students understand rather than memorize has had sprawling effects, including pushback on teaching methods ...

Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs ...

This article is about Reflect Orbital’s plan to provide “sunlight on demand” using reflector satellites in low Earth orbit ...