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Scientists Offer New Solution to How Early Earth Sustained Life Despite a Dim Sun

2013-07-11 04:32:00| Climate Ark Climate Change & Global Warming Newsfeed

Nature World News: Early life on Earth may have survived some 2.8 billion years ago through an atmosphere equipped with reasonable amounts of carbon dioxide and just a dash of methane, a new study suggests. The period, known as the Archean eon, was characterized in part by a Sun approximately 20 percent dimmer than today's. Conducted by researchers at the University of Colorado, Boulder, the scientists point to the use of sophisticated three-dimensional climate models running for thousands of hours on the school's...

Tags: life offer early sun

 

Dot Earth Blog: More Signs of Peak Us in New Study of Peak Oil Demand

2013-07-10 21:12:00| Climate Ark Climate Change & Global Warming Newsfeed

New York Times: Back in 2010, I asked this question: "Which Comes First Peak Everything or Peak Us?" My focus was whether humans could use the gift of foresight to curb resource appetites in ways that would avoid having the peak imposed on us by shortages or human-induced environmental shifts like climate disruption. There are growing signs the answer is yes. First came work pointing to "peak travel." Then I wrote about a study foreseeing "peak farmland" - an end to the need to keep pressing into untrammeled...

Tags: of blog study oil

 
 

Dot Earth Blog: 90 Degrees + A.C. + Open Doors = Hamptons Energy Policy?

2013-07-05 21:48:00| Climate Ark Climate Change & Global Warming Newsfeed

New York Times: While in East Hampton, N.Y., to discuss America`s energy choices and issues related to the current gas-drilling blitz at a screening of the anti-fracking manifesto "Gasland, Part II," I couldn`t help noticing something that illustrates the mismatch between attitudes and actions on energy in this country: In a stroll down Main Street on a 90-degree day, door after door was wide open, meaning that air conditioners were, in essence, straining to cool the planet. (Physics says this doesn`t work.)...

Tags: policy blog open energy

 

Despite Heat, Earth Is Farthest From Sun on Friday

2013-07-05 17:06:00| Climate Ark Climate Change & Global Warming Newsfeed

National Geographic: With the United States in the clutches of a heat wave that is spurring deadly wildfires across the Southwest, it might feel like the sun is punishingly close right now. Actually the exact opposite is true: Earth will be farther from the sun on Friday, July 5, than on any other day this year. That's because the orbits of all the planets in our solar system-including Earth's-are elliptical, as opposed to circular. The phenomenon was first explained in mathematical detail by the 17th-century German...

Tags: on friday sun earth

 

The Washington Post brings the Guardian back down to earth

2013-07-02 16:42:00| Food - Topix.net

The Washington Post has had a crack at Mr Steerpike's favourite game: trashing the Guardian.

Tags: to back post washington

 

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