Posts Tagged ‘early Earth’
Did phosphorous from space spark life on Earth?
U. LEEDS (UK) — Experiments suggest that unusual phosphorus chemicals from meteorites could have given power to Earth’s “primordial soup.” Continue…
Thursday, April 4, 2013 10:14 - 4 Comments
Earth & Environment - Dec 10, 2012 15:19 - 0 Comments
Ore shows signs of microbes in early oceans
MCGILL (CAN) — An analysis of sulfide ore from a Canadian mine suggests microbes were active in ocean water 2.7 billion years ago. (more…)
Earth & Environment - Dec 6, 2011 10:03 - 1 Comment
Earth’s oxygen came in ‘starts and stops’
PENN STATE (US) — The appearance of oxygen in the Earth’s atmosphere probably did not occur as a single event, according to an international team of researchers who investigated rock cores. (more…)
Earth & Environment - Apr 28, 2011 11:26 - 2 Comments
Early Earth rich in carbon monoxide
U. CHICAGO (US) — A volcanic crater is offering clues to the composition of Earth’s early atmosphere, when carbon monoxide levels may have been tens of thousands of times higher than current concentrations. (more…)
Earth & Environment - Apr 18, 2011 11:33 - 1 Comment
Early Earth was a hot, acidic home
GEORGIA TECH (US) — During the last 4 billion years, ancient enzymes have adapted from a much hotter, more acidic environment to the cooler global one that exists today. (more…)
Earth & Environment - Dec 8, 2010 12:16 - 1 Comment
Heat helped hasten life’s beginnings
UNC CHAPEL HILL (US) — The time required for evolution on a warm earth is shorter than previously thought, according to new research investigating the effect of temperature on extremely slow chemical reactions. (more…)
Science & Technology - Jun 4, 2010 10:58 - 0 Comments
Early haze likely shaded Earth from UV
U. COLORADO (US)—A thick organic haze that enshrouded early Earth several billion years ago may have been similar to the haze now hovering above Saturn’s largest moon, Titan, and would have protected primordial life on the planet from the damaging effects of ultraviolet radiation. (more…)
Earth & Environment - Feb 22, 2010 11:16 - 0 Comments
Upside-down answer for deep Earth mystery
RICE (US)—When Earth was young, it exhaled the atmosphere. Now, a team of scientists is offering a new answer to a longstanding mystery: What caused Earth to hold its last breath? (more…)
Science & Technology - Jun 2, 2009 15:17 - 3 Comments
Asteroids hammering Earth a boon to early life?
U. COLORADO (US)—The bombardment of Earth nearly 4 billion years ago by asteroids as large as Kansas would not have had the firepower to extinguish potential early life on the planet and may even have given it a boost, says a new University of Colorado at Boulder study. (more…)
