facebook
twitter
rss
account
search
search
 

Study: Humble clays may have been birthplace of life on Earth

Nov. 5, 2013 at 4:45 PM   |   Comments

ITHACA, N.Y., Nov. 5 (UPI) -- Clay may have been the birthplace of life on Earth despite being a seemingly infertile and inhospitable blend of minerals, some U.S. scientists say.

Life, or at least the complex biochemicals that make life possible, could have formed within a kind of clay known as a hydrogel, containing a mass of microscopic spaces capable of soaking up liquids like a sponge, Cornell University biological engineers report in the journal Scientific Reports.

"We propose that in early geological history clay hydrogel provided a confinement function for biomolecules and biochemical reactions," biological and environmental engineering Professor Dan Luo said.

In seawater, clay forms a hydrogel, and over billions of years chemicals confined in those spaces could have carried out the complex reactions that formed proteins, DNA and eventually all the machinery that make a living cell work, the Cornell researchers suggest.

The noted that geological history shows clay first appeared on Earth -- as silicates leached from rocks -- just at the time biomolecules began to form into protocells and eventually membrane-enclosed cells.

The geological events matched nicely with biological events, they said.

© 2013 United Press International, Inc. All Rights Reserved. Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.
Most Popular
1
North Dakota forks over $3 million for mummified dinosaur North Dakota forks over $3 million for mummified dinosaur
2
Solar eclipse will partially obscure the sun Thursday Solar eclipse will partially obscure the sun Thursday
3
Mental rest and reflection key to better learning Mental rest and reflection key to better learning
4
Ancient Europeans couldn't drink milk for 5,000 years Ancient Europeans couldn't drink milk for 5,000 years
5
Weather satellite outage threatens to foul forecasts Weather satellite outage threatens to foul forecasts
Trending News
Around the Web
x
Feedback