SciShow Courses

6 Places with Weird Human Mutations

Discover extraordinary human populations with genetic adaptations that allow survival in extreme conditions - from high altitudes to deep waters to toxic environments.

• YouTube
• 16 minutes
• Self-Paced
• Free Video

CRISPR Just Saved a Baby's Life - Millions Could Follow

Discover how CRISPR gene editing technology created a customized treatment that saved an infant from devastating liver disease, marking a breakthrough for personalized medicine.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

The Weirdest Adoptions in the Animal Kingdom

Discover fascinating cases of interspecies adoption, from capuchins raising howler monkeys to owls caring for snakes, revealing surprising animal behaviors and bonds.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

How Rare Are Extra Organs?

Explore the fascinating world of supernumerary organs, from double uteruses to extra spleens, and discover what happens when people are born with bonus body parts.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

You're Steeping Your Tea Too Long

Discover the science behind optimal tea brewing methods, from steeping times to temperature control, and learn how different preparation techniques affect caffeine content and health benefits.

• YouTube
• 16 minutes
• Self-Paced
• Free Video

We Didn't Evolve Color Vision to See Color

Uncover the evolutionary mystery of color vision and why vibrant colors in nature developed before animals could even perceive them.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

How to Make a Warning Last 10,000 Years

Explore the fascinating challenge of creating nuclear waste warnings that must endure for 300,000 years in New Mexico's storage site.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

Physicists Don't Understand Why Knitting Works

Uncover the surprising physics mysteries behind knitting and how understanding fabric mechanics could revolutionize future textile technology.

• YouTube
• 10 minutes
• Self-Paced
• Free Video

These Five Caves Changed What We Know About Ourselves

Explore how ancient cave paintings from five iconic sites reveal humanity's artistic evolution and what early human creativity teaches us about our shared heritage.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

The Biggest Mysteries Science Still Hasn't Solved - Compilation

Explore the greatest unsolved mysteries that continue to baffle scientists across Earth, life, and the universe in this comprehensive 2+ hour compilation.

• YouTube
• 2 hours 12 minutes
• Self-Paced
• Free Video

Menopause Starts Way Earlier Than You Think

Discover the surprising truth about menopause timing and what happens to your body before, during, and after this major hormonal transition that affects everyone with a uterus.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

Why Did These Ancient People Abandon Copper?

Discover why Native Americans in ancient Michigan abandoned advanced copper metalworking despite mastering the technology millennia before other cultures developed similar skills.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

Cold Doesn't Exist - And 4 Other Things Scientists Used to Think Were Real

Discover 5 fascinating scientific theories that were once accepted but later proven wrong, from caloric theory to the mysterious Planet Nemesis.

• YouTube
• 14 minutes
• Self-Paced
• Free Video

The Ancient Stick Maps That Tackle Unsolvable Physics

Discover how Pacific Islander stick charts reveal ocean wave patterns and help modern physicists solve complex navigation problems through ancient wisdom.

• YouTube
• 12 minutes
• Self-Paced
• Free Video

How Much Information Can a Human Head Hold?

Explore the fascinating limits of human brain storage capacity and discover how much data could theoretically fit inside a human head with advanced technology.

• YouTube
• 13 minutes
• Self-Paced
• Free Video