American Chemical Society
We Are Made of "Star Stuff"
Explore the validity of a famous quote by Carl Sagan, "We are made of star stuff." An episode of the ACS Reactions playlist explains how deteriorating stars became the origin of all the elements in our world. Learners consider different...
Periodic Videos
Mendelevium
The first sample of mendelevium consisted of only 17 atoms created one atom at a time. The useless, synthetic element opens the doors to many discussions. From the arrangement of the periodic table to the definition of alcohol, chemists...
MinutePhysics
Albert Einstein: Why Light is Quantum
While we are all familiar with what happens when you turn on a light bulb, Albert Einstein was convinced that there was more happening than meets the eye. The video describes his extension of the research of others to ultimately...
MinutePhysics
Why are Stars Star-Shaped?
We know stars are giant balls of plasma, so why are they drawn as pointy star shapes? The video solves this mystery through an explanation of how lenses work both in our eyes and in telescopes. It also discusses the proper way to color a...
TED-Ed
Rosalind Franklin: DNA's Unsung Hero
She was robbed! Robbed of her photograph. Robbed of recognition. Robbed of a Nobel prize. Meet Rosalind Franklin, "the woman behind the helix," the DNA double helix, that is, and learn the real story behind the discovery of the structure...
Be Smart
Whose Air Do You Share?
Take a deep breath before watching this video from PBS Digital Studios that models for viewers how humans are connected through the air we share. The video explores how small the earth's atmosphere is compared to the rest of Earth.
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