Explore the incredible defense system of the human body, from the different jobs and components of the immune system to its response to infections and how it keeps you safe.

记录了夕阳下田园风光的美丽景象，晚霞、金黄色的小草和摇曳的狗尾草，伴随着晚风，展现了一片宁静而美丽的乡村景色。

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

A poignant moment of a man expressing his emotions, struggling to hold back tears.

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

Watch the iconic Bollywood song Tumhare Nazar Ke Deewane Hai, a soulful melody that showcases the beauty of love and longing.

A depiction of the Greek god Poseidon, often associated with the sea, rising out of the ocean with his iconic long hair flowing in the waves.