Why Does Hair Only Grow to a Certain Length, The Origin of the Male and Female Symbols, How January 1st Became the New Year in Many Parts of the World and More

In this week’s “best of” our YouTube channel, we look at the way hair grows, the origin of the Male and Female symbols, plus, why January 1st is the New Year in many parts of the world, whether NASA really spent millions developing a pen and much more. Click here to subscribe to our YouTube Channel for many more videos like this.

Why Does Hair Only Grow to a Certain Length?

The Origin of the Male and Female Symbols

How January 1st Became the New Year in Many Parts of the World

Did NASA Spend Millions Developing a Pen When the Russians Used Pencils?

Where the Expression “Sleep Tight and Don’t Let the Bed Bugs Bite” Came From

The Model 3 and the First Road Trip That Saved It From Obscurity

A 60 Hour Race So Intense That Only 14 of Over 1000 Ultra-marathoners Have Ever Completed It

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