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

A mysterious grey alien wearing a cowboy hat stands in a field, with an unknown liquid dripping from its fingers to the ground, set in the 1890s.

Footage of busy city streets on a rainy day, with people rushing to their destinations under colorful umbrellas.

A demonstration of a USB pen drive being physically broken in half by hand, highlighting its fragility.

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

Watch as a penguin waddles and spins to its own beat in this adorable display of avian rhythm.