News tagged with life on earth
Plants Save the Earth from an Icy Doom (w/ Podcast)
Space & Earth / Earth Sciences
Jul 01, 2009 |
3.8 / 5 (9) |
5
(PhysOrg.com) -- Fifty million years ago, the North and South Poles were ice-free and crocodiles roamed the Arctic. Since then, a long-term decrease in the amount of CO2 in the atmosphere has cooled the Earth. ...
Asteroid Attack 4 Billion Years Ago May Have Accelerated Life on Earth
Space & Earth / Earth Sciences
May 20, 2009 |
4.7 / 5 (13) |
3
(PhysOrg.com) -- 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 ...
Cosmologist Paul Davies explores notion of 'alien' life on Earth
Space & Earth / Space Exploration
Feb 15, 2009 |
4 / 5 (14) |
2
Astrobiologists have often pondered "life as we do not know it" in the context of extraterrestrial life, says Paul Davies, an internationally acclaimed theoretical physicist and cosmologist at Arizona State University. "But," ...
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Exotic life beyond Earth? Looking for life as we don't know it
Space & Earth / Space Exploration
Sep 18, 2009 |
4.8 / 5 (24) |
8
Scientists at a new interdisciplinary research institute in Austria are working to uncover how life might evolve with "exotic" biochemistry and solvents, such as sulphuric acid instead of water. Their research ...
3 Questions: Sara Seager on searching for Earth-like planets
Nov 23, 2009 |
3.3 / 5 (3) |
0
(PhysOrg.com) -- MIT planetary scientist Sara Seager has been studying exoplanets — planets circling stars other than the sun — for many years.
Seeking Life's Shadow
Space & Earth / Space Exploration
Oct 01, 2009 |
4.7 / 5 (3) |
1
They haven't yet figured out how to draw blood from stones, but a group of French researchers is offering new insight that could change how scientists search for signs of life in Martian rocks.
Scientists propose new hypothesis on the origin of life
Space & Earth / Earth Sciences
Sep 04, 2009 |
4.8 / 5 (39) |
36
The Miller-Urey experiment, conducted by chemists Stanley Miller and Harold Urey in 1953, is the classic experiment on the origin of life. It established that the early Earth atmosphere, as they pictured it, ...
The greenhouse gas that saved the world
Space & Earth / Earth Sciences
Aug 18, 2009 |
3.6 / 5 (9) |
7
When Planet Earth was just cooling down from its fiery creation, the sun was faint and young. So faint that it should not have been able to keep the oceans of earth from freezing. But fortunately for the creation of life, ...
Jupiter's Moon Europa Has Enough Oxygen For Life
Space & Earth / Earth Sciences
Oct 16, 2009 |
4.8 / 5 (94) |
42
New research suggests that there is plenty of oxygen available in the subsurface ocean of Europa to support oxygen-based metabolic processes for life similar to that on Earth. In fact, there may be enough ...
A Hazy View of Early Earth
Space & Earth / Earth Sciences
Oct 12, 2009 |
4.3 / 5 (4) |
3
Haze in the early Earth atmosphere could have played a crucial role in the origin of life. By forming a protective shield, the haze would have safeguarded organic substances from harmful ultraviolet (UV) radiation. ...
Early life on Earth may have developed more quickly than thought (w/ Video)
Space & Earth / Earth Sciences
Nov 11, 2009 |
4.8 / 5 (18) |
0
The Earth's climate was far cooler -- perhaps more than 50 degrees -- billions of years ago, which could mean conditions for life all over the planet were more conducive than previously believed, according ...
Building Planet Earth
Oct 22, 2009 |
4.4 / 5 (9) |
1
A new study shows how rocky planets are formed from the manic swirl of gas and dust that surround a young star, and determines what chemical building blocks are used to construct the planets. Understanding ...
Migrating Microbes
Space & Earth / Space Exploration
Oct 15, 2009 |
5 / 5 (1) |
0
With every spacecraft that leaves Earth, millions of microbes hitch a ride into space. As astrobiologists search for life in other worlds, preventing forward and back contamination remains a key priority.
List of search results for life on earth
