Learn about the fundamental principles of electric circuits, including voltage, current, resistance, and common components like wires, batteries, and switches.

A carefree girl dances and twirls near the beach, enjoying the sun and sea breeze.

Aerial footage of New York City's grid-like streets and rectangular buildings creates a visual resemblance to a plate of ravioli.

习惯可以改变一个人，好的习惯让我们变得更好，坏的习惯让我们不由自主。如何养成好的习惯，改变自己？

Witness a breathtaking rainbow-colored aurora in space, captured by NASA's cameras, showcasing the vibrant colors of charged particles interacting with the Earth's magnetic field.

Watch as a car appears to teleport to different locations around the city at night, its lights illuminating the dark streets.

Watch Dwayne Johnson showcase his vocal skills in this entertaining video of him singing.