Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Earth Science News .




ICE WORLD
Sea stalactites provide clues to origin of life
by Staff Writers
Washington DC (SPX) Apr 26, 2013


File image.

Life on Earth may have originated not in warm tropical seas, but with weird tubes of ice - sometimes called "sea stalactites" - that grow downward into cold seawater near the Earth's poles, scientists are reporting.

Their article on these "brinicles" appears in ACS' journal Langmuir.

Bruno Escribano and colleagues explain that scientists know surprisingly little about brinicles, which are hollow tubes of ice that can grow to several yards in length around streamers of cold seawater under pack ice.

That's because brinicles are difficult to study. The scientists set out to gather more information on the topic with an analysis of the growth process of brinicles.

They are shown to be analogous to a "chemical garden," a standby demonstration in chemistry classes and children's chemistry sets, in which tubes grow upward from metal salts dropped into silicate solution. But brinicles grow downward from the bottom of the ice pack.

The analysis concluded that brinicles provide an environment that could well have fostered the emergence of life on Earth billions of years ago, and could have done so on other planets.

"Beyond Earth, the brinicle formation mechanism may be important in the context of planets and moons with ice-covered oceans," the report states, citing in particular two moons of Jupiter named Ganymede and Callisto.

The authors acknowledge funding from the Spanish Ministerio de Ciencia e Innovacion.

.


Related Links
American Chemical Society
Beyond the Ice Age






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





ICE WORLD
EU court maintains seal fur ban
Luxembourg (AFP) April 25, 2013
An EU court in a much-anticipated ruling Thursday upheld a 2010 ban on seal products, throwing out an appeal by fur traders including native Inuit from Canada and Greenland, and Scottish sporran-makers. The Canada-led campaign to lift the ban on the trade in seal fur and products was joined by the country's largest Inuit group, Inuit Tapiriit Kanatami (ITK), as well as by Scottish suppliers ... read more


ICE WORLD
U.S. lawyer defends Australian asylum seekers

Landslide kills 14 in Ecuador

Pakistan quake victims burn tyres at angry protests

Hong Kong searches for 6 missing crew after boat crash

ICE WORLD
US eases export rules on aerospace parts

MEADS Low Frequency Sensor Cues Multifunction Fire Control Radar in Test

Ontario Air Cadets Take Flight in Lockheed Martin's Prepar3D Simulation Software

Softening steel problem expands computer model applications

ICE WORLD
Rivers Act As 'Horizontal cooling towers'

New Caledonia bans shark fishing

New NASA Satellite Takes the Salton Sea's Temperature

Climate scientists say Asian monsoon forecasts could improve

ICE WORLD
Sea stalactites provide clues to origin of life

Chinese ship sinks off Antarctica: Chile

Age matters to Antarctic clams

An SwRI-led remote-sensing study quantifies permafrost degradation in Arctic Alaskan wetlands

ICE WORLD
Deep, Permeable Soils Buffer Impacts of Agricultural Fertilization on Streams and Rivers in Southern Amazon

Ecology, economy and management of an agro-industrial Amazon frontier

Double cropping helps Brazil develop

New studies explore mango's potential health-affirming properties

ICE WORLD
Measuring the hazards of global aftershock

Calculating tsunami risk for the US East Coast

A global murmur, then unusual silence

Superstorm Sandy shook the US

ICE WORLD
Nigeria amnesty panel says talks possible with Islamists

Scaled down US-Morocco war games resume: embassy

S.African leaders at odds on C.Africa troop re-deployment

France hands Timbuktu mission to Burkina Faso troops

ICE WORLD
Ancient skeletons reveal genetic 'history' of Europe's peoples

From mice to humans, comfort is being carried by mom

DNA study suggests human immunity to disease has ethnicity basis

Fascinating rhythm: The brain's 'slow waves'




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement