12 DEC 2017 by ideonexus

 Human Myth-Making is Crucial to Modern Society

It’s relatively easy to agree that only Homo sapiens can speak about things that don’t really exist, and believe six impossible things before breakfast. You could never convince a monkey to give you a banana by promising him limitless bananas after death in monkey heaven. But why is it important? After all,
  1  notes
 
19 JUL 2013 by ideonexus

 Hand Axes as an Extended Phenotype

Two and a half million years ago, our small-brained ancestors evolved the ability to knock flakes from rocks to use as cutting edges. By doing so, they could also make the rocks themselves useful as choppers. This basic tool kit of flakes and choppers served the needs of hunting and gathering for a million years. Then, around 1.6 million years ago, a medium-brained African hominid (Homo erectus) evolved the ability to produce an extraordinary object that archeologists call a handaxe. A handax...
  1  notes

If, as the author assumes, handaxes were genetically-informed because they did not change for hundreds of thousands of years, then why do we not still have the instinct for hand axes?

03 MAY 2011 by ideonexus

 A lot happens in 100k Years of Evolution

Inside my skull is a brain that was designed to exploit the conditions of an African savanna between 3 million and 100,000 years ago. When my ancestors moved into Europe (I am a white European by descent) about 100,000 years ago, they quickly evolved a set of physiological features to suit the sunless climate of northern latitudes: pale skin to prevent rickets, male beards, and a circulation relatively resistant to frostbite. But little else changed: Skull size, body proportions, and teeth ar...
Folksonomies: evolution human evolution
Folksonomies: evolution human evolution
  1  notes

A brief descriptions of the characteristics acquired in 100,000 years of human history.