This video shows how to build a motion sensor street light in Minecraft using Redstone mechanics. The tutorial explains how player movement can be detected to automatically turn lights on and off, ...

Add Yahoo as a preferred source to see more of our stories on Google. The light echo around the star V838 Monocerotis as seen by the Hubble Space Telescope in November 2005. (NASA, ESA and H. Bond ...

The new second-generation Eve Motion HomeKit sensor adds Thread support, an integrated light sensor, and costs less than the previous model. Six years after its original motion sensor was released ...

When I was a teenager, I was—shockingly, I know—deeply nerdy. At a science-fiction convention, I bought a button that read, “186,282 miles/second: Not just a good idea, it’s the law.” It was poking ...