....is practical if you exercise common sense.
For example:
"How a single-celled organism almost wiped out life on Earth" (4 minutes)
TED-ED Talk
https://youtu.be/dO2xx-aeZ4w
The Trouble With Trilobites
PBS Eons (7 minutes)
https://youtu.be/Aji2VnQFUCs
"We Are All Related" (6 min.)
by Vsauce
https://youtu.be/BhtgINeaJWg
"Empty Space Is Not Empty"
by Veritasium (5 minutes)
https://youtu.be/J3xLuZNKhlY
What If Only 100 People Existed on Earth?
by RealLifeLore (7 minutes)
https://youtu.be/UbffuGZHeR0
Why Nature Loves Hexagons
by It's Okay To Be Smart (Six minutes)
https://youtu.be/Pypd_yKGYpA
The Animated History of Ukraine (6 minutes)
by Suibhne
https://youtu.be/9aiPkqfv0Yg
When you find a YouTube channel you like and can trust, use the YouTube search function and type in their name for their other videos. Or, search their name on your 'web search engine' for their home page and further information.
To find a wider variety, search using "educational youtube channels" as search parameter.
Sometimes a YouTube channel has only one video. For example:
The OBSERVER EFFECT of QUANTUM PHYSICS says: "Your THOUGHTS affect REALITY"
https://youtu.be/Bq69-MI9TA0
