Why do we have hair in such random places? - Nina G. Jablonski

Summary by Krater

This video explains the evolutionary history of human body hair, discussing why our ancestors lost most of their coat and the functions of remaining hair types.

From the video

Answers: Why do humans have hair and why did we lose most of it?

• human hair evolution
• keratin and hair follicles
• thermoregulation in early humans
• sweat glands
• functions of human hair types

What it concludes

• Early humans lost most of their coat to improve sweat evaporation and cooling as they adopted a more active lifestyle.
• Hair on the head protects the sensitive scalp and brain from overheating under solar radiation.