Xiaomi has officially launched the Mijia Diffuse Reflection Ceiling Light in China, priced at 1899 yuan ($268). This is currently the most expensive ceiling light in Xiaomi’s Mijia lineup and ...

The incandescent light bulb was one of the first early applications of electricity, and it’s hard to underestimate its importance. But before the electric light, people didn’t live in darkness — they ...

Can we turn back time? Ask a savvy physicist, and the answer will be “it depends.” Schemes for retrograde time travel abound but usually involve irreconcilable paradoxes and rely on outlandish ...