Learn about the guitarra, a stringed musical instrument originating from Spain, its history, types, and playing techniques.

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

Learn about the life and career of Elon Musk, CEO of SpaceX and Tesla, and his innovative ventures in technology and space exploration.

A highly detailed, black and white pencil drawing of a neuron network, with hundreds of neurons ranging in size, and active synapses glowing, in a cartoon comic book style.

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

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。

A female athlete from Africa in motion, showcasing her speed and endurance while running.