News tagged with earth atmosphere

Extreme global warming in the ancient past

Variations in atmosphere carbon dioxide around 40 million years ago were tightly coupled to changes in global temperature, according to new findings published in the journal Science. The study was led by sci ...

Nov 10, 2010
4.2 / 5 (9) 7 | with audio podcast

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 ...

Oct 29, 2010
4.5 / 5 (15) 7 | with audio podcast

Sensitive side

(PhysOrg.com) -- A little extra carbon dioxide in the air may, unfortunately, go further towards warming Earth than previously thought. A team of British and U.S. researchers have uncovered evidence [1] that ...

May 05, 2010
4.1 / 5 (10) 6 | with audio podcast

Most earthlike exoplanet started out as a gas giant

The most earthlike planet yet found around another star may be the rocky remains of a Saturn-sized gas giant, according to research presented today at the American Astronomical Society meeting in Washington.

Jan 06, 2010
4.7 / 5 (11) 4 | with audio podcast

A Hazy View of Early Earth

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. ...

Oct 12, 2009
4.3 / 5 (4) 3

Man-Made Activities Affect Blue Haze (w/ Video)

(PhysOrg.com) -- "Blue haze," a common occurrence that appears over heavily forested areas around the world, is formed by natural emissions of chemicals, but human activities can worsen it to the point of affecting the world's ...

Oct 06, 2009
1.7 / 5 (3) 0