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

Discover the challenges customers face when searching for labs online, seeking advice from colleagues, and relying on personal recommendations.

Senator Bernie Sanders takes a break from campaigning to grab a quick bite at a fast food restaurant, giving a glimpse into his eating habits on the road.

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。

Debunking the myth: Space Shuttles were designed for low-Earth orbit, not lunar missions. Explore the facts behind the Space Shuttle program.

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

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