The Human Brain Has been Getting Smaller Since the Stone Age

Yep, brains are shrinking.

Middle Stone Age - Wikipedia

Omega-3s – Vegan Health

From Stone Age Chips to Microchips

How will humans change in the next 10,000 years? - Big Think

How we became sapiens - Patrick Holford

Why did human brains decrease in size 3,000 years ago? - Quora

Brains The Smithsonian Institution's Human Origins Program

Researchers Still Puzzled: Why Did Human Brains Shrink?

Why did human brains decrease in size 3,000 years ago? - Quora

The functional brain networks that underlie Early Stone Age tool manufacture

If Modern Humans Are So Smart, Why Are Our Brains Shrinking