Learn how to safely and effectively fire a gun without revealing your position or identity.

Watch Dwayne 'The Rock' Johnson showcase his vocal skills in a lively big band jazz performance, blending his charisma with classic jazz sounds.

了解中国唐代伟大诗人杜甫的故事，他如何从贫穷学士成为官员和诗歌奇迹的创造者，及其对生命和人民的热爱和关怀。

Learn about the life and achievements of Bill Gates, from his childhood to co-founding Microsoft and becoming a philanthropic leader.

The Terminator star and former Governor of California acknowledges and waves to his enthusiastic fans in a public appearance.

A documentary about the life and reign of Queen Elizabeth II, the longest-reigning British monarch in history.

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