Recent Science Discoveries, 2000
And other recent science discoveries
by Otto Johnson
| Introduction |
Ice Age Haute Couture
Antisocial Brain Tissue Deficit
New Orleans, the New Atlantis?
First Cloned Piglets
Snakes with Legs?
It's A Smaller World After All
Rare Arctic Asteroid
Other Amazing Discoveries
Did Humans Evolve From Tree-Dwellers or Animals on Ground?
This discovery lends support to the theory that humans didn't evolve from tree dwellers, but from ancestors who were already adapted to walking on the ground.It's All In the Wrist
The researchers compared the fossilized wrist joints from known human ancestors with the wrist joints of other primates. The wrist anatomy of Lucy and her cousins resembles that of chimpanzees and gorillas in having features that buttress the wrist joint and help to lock the wrist into a stable position so that the animal can support its weight on its fingers. It was not until the later species, A. africanus, at 2 to 3 million years ago, that evidence of a more humanlike, flexible wrist joint exists.