Old 08-12-2008, 03:10 PM Offline   #1 (permalink)



 
coolmanhiphop's Avatar
Mr. News Guy
 
Since: Nov 2007
Posts: 109,399
Rank:
Uploads: 0
eCash: $500
Thank Meter: 9973

coolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimescoolmanhiphop started pushin nickels an dimes
Rep Power: 2076
Default Cooking Stimulated Big Leap In Human Cognition

Hugh Pickens writes "For a long time, humans were pretty dumb, doing little but make 'the same very boring stone tools for almost 2 million years,' says Philipp Khaitovich of the Partner Institute for Computational Biology in Shanghai. Then, 150,000 years ago, our big brains suddenly got smart. We started innovating. We tried different materials. We started creating art and maybe even religion. To understand what caused the cognitive spurt, researchers examined chemical brain processes known to have changed in the past 200,000 years. Comparing apes and humans, they found the most robust differences were for processes involved in energy metabolism. The finding suggests that increased access to calories spurred our cognitive advances, although definitive claims of causation are premature. In most animals, the gut needs a lot of energy to grind out nourishment from food sources. But cooking, by breaking down fibers and making nutrients more readily available, is a way of processing food outside the body. Eating (mostly) cooked meals would have lessened the energy needs of our digestion systems, thereby freeing up calories for our brains. Today, humans have relatively small digestive systems and allocate around 20% of their total energy to the brain, compared to approximately 13% for non-human primates and 2-8% for other vertebrates. While other theories for the brain's cognitive spurt have not been ruled out, the finding sheds light on what made us, as Khaitovich put it, 'so strange compared to other animals.'"
Read more of this story at Slashdot.
</img>


More...
 
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cooking Stimulated Big Leap In Human Cognition coolmanhiphop Feeds 0 08-12-2008 02:31 PM
Cognition Enhancer Research coolmanhiphop Feeds 0 05-23-2008 03:00 PM
The Next Leap In Space Exploration coolmanhiphop Feeds 0 03-27-2008 08:40 AM
Too Human Blog: Too Human Contest coolmanhiphop Game Feeds 0 03-06-2008 04:40 PM
A leap of faith in the morning at CBS (AP) coolmanhiphop RSS Feeds 0 01-06-2008 09:30 PM


All times are GMT -8. The time now is 09:56 AM.

Archive:


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.3.2 © 2009, Crawlability, Inc.
Hip Hop Universe 2005-Forever