Best documentary channels on YouTube

Here are some of the best documentary channels on YouTube:

1. BBC Earth (https://www.youtube.com/user/BBCEarth)
2. National Geographic (https://www.youtube.com/@NatGeo)
3. VICE Documentary (https://www.youtube.com/user/vice/videos)
4. Real Stories (https://www.youtube.com/@RealStories/videos)
5. DW Documentary (https://www.youtube.com/c/DWDocumentary/videos)
6. The Guardian (https://www.youtube.com/@theGuardian)
7. Smithsonian Channel (https://www.youtube.com/user/smithsonianchannel)
8. Free Documentary (https://www.youtube.com/user/FreeDocumentary/videos)
9. Journeyman Pictures (https://www.youtube.com/user/JourneymanVOD/videos)
10. Al Jazeera English (https://www.youtube.com/user/AlJazeeraEnglish/videos)
11. Timeline – World History Documentaries (https://www.youtube.com/c/TimelineChannel/videos)

These channels offer a variety of documentaries on different topics, including history, science, nature, politics, and more. They have user-friendly interfaces and offer high-quality content for free. However, some channels may have advertisements, and some may require registration or subscription to access their content. Be sure to check the specific terms and conditions of each channel before using their services.