How Simple Ideas Lead to Scientific Discoveries is an animated lecture by Adam Savage about the awesome power of curiosity and how, with a bit of ingenuity, incredibly complex questions can be easily answered. Focusing on Eratosthenes’ calculation of the Earth’s circumference around 200 BC and Hippolyte Fizeau’s measurement of the speed of light in 1849, this TED-Ed video is like a pure shot of adrenaline for the mind.
If you dig this, you should check out TED-Ed’s One is one … or is it?, Just How Small is an Atom? and The Power of Simple Words.