Who decides how long a second is? - John Kitching

Unlocking the Power of Derived Words in English

Magnets - History of Magnetism

Why algorithms are called algorithms | BBC Ideas

英語はどこから来たのか？― クレア・ ボウエン

Where do new words come from? - Marcel Danesi

Where do math symbols come from? - John David Walters

The SHOCKING Origin of the F-Word!

数学は発見されたのか 発明されたのか-ジェフ・デコフスキー

What is the number "e" and where does it come from?

mtDNA shows how humans migrated across the World

Why are Sine & Cosine given their names?

数字eは何ですか?

Sanskrit connections to English | World History | Khan Academy

Hydrogen word derived from latin...

6 Steps of Scientific Method explained with Example (Penicillin Discovery)

Steven Hawcking on God

三角法の起源

The word drug is derived from

Voyage into the world of atoms