Showing posts with label early earth. Show all posts
Showing posts with label early earth. Show all posts
Thursday, March 29, 2012

Fossilised Marks Of Raindrops Reveal Ancient Atmosphere

›
Fossilised imprints left by raindrops in South Africa 2.7 billion years ago. Credit: Wlady Altermann/University of Pretoria Fossil Raindrops...
Wednesday, March 28, 2012

Did Comets Bring Life To Earth?

›
Photo: The combination of water, energy and amino acids – which bind together to form proteins – could have caused the first chemical react...
Saturday, March 13, 2010

World's Oldest Rivers Mapped Under Huge Desert Dunes

›
The Simpson desert's fabled dunes block its underground water channels from remote sensing (Image: visionandimagination.com/Getty) From ...
Thursday, March 11, 2010

Early Earth Embroiled In Constant Solar Storm

›
The larger auroral oval relative to the modern is the result of a weaker dipole magnetic field and stronger solar wind dynamic pressure. The...
Wednesday, February 24, 2010

Geologists Look For Answers In Antarctica: Did Ice Exist At Equator Some 300 Million Years Ago?

›
From Science Daily: Science Daily (Feb. 24, 2010) — Focusing on a controversial hypothesis that ice existed at the equator some 300 million ...
Thursday, February 18, 2010

Upside-Down Answer For Deep Mystery: What Caused Earth To Hold Its Last Breath?

›
Volcano eruption (Reunion island, Indian Ocean). (Credit: iStockphoto) From Science Daily: Science Daily (Feb. 18, 2010) — When Earth was y...
Friday, February 5, 2010

First Breath: Earth's Billion-Year Struggle For Oxygen

›
The complex story of oxygen's rise (Image: Reso/Rex Features) From The New Scientist: OXYGEN is life. That's true not just for us: a...
Friday, December 11, 2009

Mediterranean Was Created In Earth's Biggest Deluge

›
The deluge that formed the Mediterranean. Photograph: Roger Pibernat From The Guardian: Catastrophic flooding caused sea levels to rise by 1...
Wednesday, December 9, 2009

Colossal Flood Created The Mediterranean Sea

›
Mediterranean Sea and the Strait of Gibraltar photographed by NASA. Part of Spain can be seen above and Africa, below, in the photo. From Li...
Thursday, October 8, 2009

Fossils Suggest An Ancient CO2-Climate Link

›
Mark Pink / Alamy From Time Magazine: Some of the best evidence linking rising carbon dioxide levels to a warmer world comes from the coldes...
Monday, September 21, 2009

When You Could Fling A Frisbee From Canada To Zimbabwe

›
Ancient basalt vein, Greenland Credit: Michael A. Hamilton From Live Science: Imagine flipping a Frisbee in Quebec, Canada, and seeing it la...
Wednesday, September 16, 2009

Argentina Site Of World's Biggest Crater Field

›
The Barringer Crater in Arizona, USA, is one of the largest obvious craters known on Earth. Credit: Wikipedia From Cosmos/AFP: BUENOS AIRES:...
Monday, September 14, 2009

Flash Recovery Of Ammonoids After Most Massive Extinction Of All Time

›
Asteroceras, a Jurassic ammonite from England. (Credit: Courtesy of Wikimedia Commons) From Science Daily: ScienceDaily (Sep. 14, 2009) — Af...
Thursday, September 10, 2009

Ancient Oceans Offer New Insight Into Origins Of Animal Life

›
In prehistoric times, Earth experienced two periods of large increases and fluctuations in the oxygen level of the atmosphere and oceans. Th...
Monday, August 31, 2009

Diving Deep For A Living Fossil

›
Light-equipped booms on Alvin illuminate the sea floor and pillow lava formations created by eruptions on the Mid-Atlantic Ridge. The Stephe...
Friday, July 10, 2009

Did an Ancient Volcano Freeze Earth?

›
Remnant. Toba today comprises a caldera lake, a newly arising cone (central island), and a pip-squeak of a volcanic progeny named Pusukbukit...
Wednesday, July 8, 2009

Was Ancient Earth A Green Planet?

›
From The New Scientist: Earth's landmasses in the late Precambrian probably weren't pleasant, but at least they were green. A new an...
Friday, July 3, 2009

How Earth Got Its Oxygen

›
Cyanobacteria scum is now considered a nuisance, but these microbes oxygenated our planet over 2 billion years ago. Credit: Washington State...
Thursday, June 18, 2009

Could Life Be 12 Billion Years Old?

›
From Live Science: Much of the search for life outside of Earth's biological oasis has focused on examining the conditions on the other ...
Saturday, June 13, 2009

Early Rocks To Reveal Their Ages

›
From BBC: A new technique has been helping scientists piece together how the Earth's continents were arranged 2.5 billion years ago. The...