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Why Am I Like This?

Why Do We Have Different Hair Types?

Season 1 Episode 3 | 9m 46s

Have you ever wondered why your hair grows out of your scalp the way it does? Maybe you've also wondered why our body hair isn't as dense as most other mammals. Dr. Tina Lasisi walks us through why hair varies so much across all humans, how hair is a part of our impressive thermoregulatory system, and the shortcomings of addressing hair variation in scientific literature.

Aired: 09/14/22
Funding for WHY AM I LIKE THIS is provided by the National Science Foundation.
Extras
Watch • 7:48
Why Am I Like This?
Why Does My Voice Sound Like This?
We explore how the structure of our vocal tract produces sound and why humans speak.
Episode: S1 E8 | 7:48
Watch • 12:13
Why Am I Like This?
Can We Change Our Body Type?
We walk through the types of muscles and hormones that transform the body.
Episode: S1 E7 | 12:13
Watch • 8:03
Why Am I Like This?
Can Humans Change Their Sleep Cycle?
Dr. Tina Lasisi walks us through the peaks and valleys of our circadian rhythm.
Episode: S1 E6 | 8:03
Watch • 10:55
Why Am I Like This?
Why Do We Get Allergies? (And Are They Really Necessary?)
Let's walk through how our immune system evolved and what affects our allergies.
Episode: S1 E5 | 10:55
Watch • 9:31
Why Am I Like This?
Where Does Our Stress Come From?
We explore the evolutionary function of stress.
Episode: S1 E4 | 9:31
Watch • 9:20
Why Am I Like This?
Where Does My Skin Color Come From?
In this episode, Dr. Tina Lasisi walks us through how we genetically inherit skin color.
Episode: S1 E2 | 9:20
Watch • 10:38
Why Am I Like This?
How Did We Evolve a Sense of Smell?
In this episode, we walk through how our brain develop and process smell.
Episode: S1 E1 | 10:38
Latest Episodes
Watch • 7:48
Why Am I Like This?
Why Does My Voice Sound Like This?
We explore how the structure of our vocal tract produces sound and why humans speak.
Episode: S1 E8 | 7:48
Watch • 12:13
Why Am I Like This?
Can We Change Our Body Type?
We walk through the types of muscles and hormones that transform the body.
Episode: S1 E7 | 12:13
Watch • 8:03
Why Am I Like This?
Can Humans Change Their Sleep Cycle?
Dr. Tina Lasisi walks us through the peaks and valleys of our circadian rhythm.
Episode: S1 E6 | 8:03
Watch • 10:55
Why Am I Like This?
Why Do We Get Allergies? (And Are They Really Necessary?)
Let's walk through how our immune system evolved and what affects our allergies.
Episode: S1 E5 | 10:55
Watch • 9:31
Why Am I Like This?
Where Does Our Stress Come From?
We explore the evolutionary function of stress.
Episode: S1 E4 | 9:31
Watch • 9:20
Why Am I Like This?
Where Does My Skin Color Come From?
In this episode, Dr. Tina Lasisi walks us through how we genetically inherit skin color.
Episode: S1 E2 | 9:20
Watch • 10:38
Why Am I Like This?
How Did We Evolve a Sense of Smell?
In this episode, we walk through how our brain develop and process smell.
Episode: S1 E1 | 10:38