What started as a simple “can I make it run longer” spiraled into a full-blown beautiful grandfather clock. A gear drive, a ratcheted winding sprocket, and a ball chain gave the clock about ...

See the instructions below for detailed instructions on how to do this via the GitHub web interface. You may want to first take a look at the requirements for admission into the Arduino Library ...

If you want to wake up more gently and naturally, we recommend investing in a sunrise alarm clock, which will stir you with gradual light and calming nature sounds. Skip the snooze button and ...

We have trillions of body clocks — a central one in the brain and others in each cell of our body. Here's how they work with light to control our health. Exposure to light is crucial for our ...

Hear how we covered some of the biggest news stories since 1931.

据外媒报道，日本国家警察厅（National Police Agency）公布了一项法案草案，将允许具高度自动驾驶功能的车辆在公共道路上行驶，并且计划于2020年上半年实施该法案。