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Britannica Explains
Spring forward; fall back.
Watch more
About Time
What causes the seasons?
What is the difference between a solstice and an equinox?
Explore the phases of the Moon and their effectiveness in tracking time
What is Leap Day?
The Animal Kingdom, Demystified
What do camels store in their humps?
Are dogs really colorblind?
How is a bison different from a buffalo?
What is the difference between a rabbit and a hare?
New on Britannica
Why is blood red?
What is a certificate of deposit?
What causes algae blooms?
How are plant cells different from animal cells?
How did opera's greatest soprano lose her voice?
The miles-long history of the marathon
How much blood is in the human body?
How do cicadas know when to go aboveground?
What and when is Easter?
Holi: Explaining the Festival of Colors
Pisces: The final sign of the zodiac
What is Palm Sunday?
Original Series
Britannica Explains
Whatever your question, Britannica has the answer.
Demystified Videos
Science, art, history, and culture—demystified.
B-Money Smart
Want to become a smarter investor, saver, and spender? Britannica Money breaks down the complex world of finance.
Behind the Zodiac
What’s really written in the stars?
Britannica Classics
Check out these retro videos from Encyclopedia Britannica’s archives.
#WTFact Videos
In #WTFact Britannica shares some of the most bizarre facts we can find.
This Time in History
In these videos, find out what happened this month (or any month!) in history.
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