Season 5

Video thumbnail: Reactions How Do Antiviral Drugs Work?

How Do Antiviral Drugs Work?

Video thumbnail: Reactions The Early Plan to Fight COVID with the Polio Vaccine

The Early Plan to Fight COVID with the Polio Vaccine

Video thumbnail: Reactions Do Masks Stop COVID-19? (Yes! Here's Why)

Do Masks Stop COVID-19? (Yes! Here's Why)

Video thumbnail: Reactions How Did We Get COVID Vaccines So Quickly?

How Did We Get COVID Vaccines So Quickly?

Video thumbnail: Reactions Can Soap Really "Kill" the Coronavirus?

Can Soap Really "Kill" the Coronavirus?

Video thumbnail: Reactions Which of These Mushrooms Could Kill You?

Which of These Mushrooms Could Kill You?

Video thumbnail: Reactions 11 Things You Can Do With Your Dead Body

11 Things You Can Do With Your Dead Body

Video thumbnail: Reactions Cartoon Chemistry!

Cartoon Chemistry!

Video thumbnail: Reactions Yule Log Chemistry Trivia - 4 Hours of Cozy Fireplace

Yule Log Chemistry Trivia - 4 Hours of Cozy Fireplace

Video thumbnail: Reactions How Miracle Berries Alter Your Taste Buds

How Miracle Berries Alter Your Taste Buds

Video thumbnail: Reactions The Science of J. Kenji López-Alt's Roasted Potato Recipe

The Science of J. Kenji López-Alt's Roasted Potato Recipe

Video thumbnail: Reactions World’s Deadliest (& Cutest) Animals

World’s Deadliest (& Cutest) Animals

Video thumbnail: Reactions Where Did the Vampire Lore Come From?

Where Did the Vampire Lore Come From?

Video thumbnail: Reactions How Do Blacksmiths Make Swords?

How Do Blacksmiths Make Swords?

Video thumbnail: Reactions How to Make Magnetic Slime

How to Make Magnetic Slime

Video thumbnail: Reactions Space Mirrors and Other Weird Ways to Fight Climate Change

Space Mirrors and Other Weird Ways to Fight Climate Change

Video thumbnail: Reactions We Tested Google’s Tips for Getting Stains Out

We Tested Google’s Tips for Getting Stains Out

Video thumbnail: Reactions Is Superhero Strength Real?

Is Superhero Strength Real?

Video thumbnail: Reactions How Much Does a Cloud Weigh?

How Much Does a Cloud Weigh?

Video thumbnail: Reactions Don't Mix These Things with Birth Control!

Don't Mix These Things with Birth Control!

Video thumbnail: Reactions Can a Fecal Transplant Save You From This Dangerous Bacteria

Can a Fecal Transplant Save You From This Dangerous Bacteria

Video thumbnail: Reactions What Exactly Happened at Chernobyl?

What Exactly Happened at Chernobyl?

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