News tagged with ancient atmosphere
Fossil raindrop impressions imply greenhouse gases loaded early Earth's atmosphere
In ancient Earth history, the sun burned as much as 30 percent dimmer than it does now. Theoretically that should have encased the planet in ice, but there is geologic evidence for rivers and ocean sediments ...
Space & Earth / Earth Sciences
Mar 28, 2012 |
not rated yet |
4
|
Dog skull dates back 33,000 years
If you think a Chihuahua doesn't have much in common with a Rottweiler, you might be on to something.
Other Sciences / Archaeology & Fossils
Jan 23, 2012 |
4.7 / 5 (15) |
3
|
Setting the stage for life: Scientists make key discovery about the atmosphere of early Earth
Scientists in the New York Center for Astrobiology at Rensselaer Polytechnic Institute have used the oldest minerals on Earth to reconstruct the atmospheric conditions present on Earth very soon after its birth. The findings, ...
Space & Earth / Earth Sciences
Nov 30, 2011 |
4.4 / 5 (7) |
1
|
Ancient fossils hold clues for predicting future climate change, scientists report
(PhysOrg.com) -- By studying fossilized mollusks from some 3.5 million years ago, UCLA geoscientists and colleagues have been able to construct an ancient climate record that holds clues about the long-term ...
Space & Earth / Earth Sciences
Apr 08, 2011 |
4.2 / 5 (6) |
2
|
Mars' missing carbon dioxide may be buried
(PhysOrg.com) -- Rocks on Mars dug from far underground by crater-blasting impacts are providing glimpses of one possible way Mars' atmosphere has become much less dense than it used to be.
Space & Earth / Space Exploration
Mar 09, 2011 |
5 / 5 (4) |
9
|
Plankton key to origin of Earth's first breathable atmosphere
Researchers studying the origin of Earth's first breathable atmosphere have zeroed in on the major role played by some very unassuming creatures: plankton.
Space & Earth / Earth Sciences
Feb 21, 2011 |
4 / 5 (5) |
0
|
Discovery could reveal secrets of ancient Martian and terrestrial atmospheres
(PhysOrg.com) -- Chemists at UC San Diego have uncovered a new chemical reaction on tiny particulates in the atmosphere that could allow scientists to gain a glimpse from ancient rocks of what the atmospheres ...
Space & Earth / Earth Sciences
Nov 08, 2010 |
4.2 / 5 (5) |
0
|
Raising giant insects to unravel ancient oxygen
The giant dragonflies of ancient Earth with wingspans of up to 70 centimeters (28 inches) are generally attributed to higher oxygen atmospheric levels in the atmosphere in the past. New experiments in raising modern insects ...
Space & Earth / Earth Sciences
Oct 29, 2010 |
4.5 / 5 (15) |
7
|
First sighting of Halley’s comet pushed back two centuries
(PhysOrg.com) -- Researchers have modeled the likely path taken by Halley's comet in the 5th century BC and compared their findings to ancient Greek texts from the period. They now suggest the ancient Greeks ...
Space & Earth / Space Exploration
Sep 13, 2010 |
4.7 / 5 (18) |
1
|
Earth's atmosphere came from outer space, find scientists
(PhysOrg.com) -- The gases which formed the Earth's atmosphere - and probably its oceans - did not come from inside the Earth but from outer space, according to a study by University of Manchester and University ...
Space & Earth / Earth Sciences
Dec 10, 2009 |
4.2 / 5 (30) |
12
Ancient oceans offer new insight into the origins of animal life
(PhysOrg.com) -- Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth.
Space & Earth / Earth Sciences
Sep 09, 2009 |
4.4 / 5 (10) |
1
International Greenland Ice Coring Effort Sets New Drilling Record in 2009
(PhysOrg.com) -- A new international research effort on the Greenland ice sheet with the University of Colorado at Boulder as the lead U.S. institution set a record for single-season deep ice-core drilling ...
Space & Earth / Earth Sciences
Aug 26, 2009 |
3.7 / 5 (3) |
2
