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Size and Age of Plants Impact Their Productivity More Than Climate
July 22, 2014 12:27 PM - University of Arizona

The size and age of plants have more of an impact on their productivity than temperature and precipitation, according to a landmark study by University of Arizona researchers. UA professor Brian Enquist and postdoctoral researcher Sean Michaletz, along with collaborators Dongliang Cheng from Fujian Normal University in China and Drew Kerkhoff from Kenyon College in Gambier, Ohio, have combined a new mathematical theory with data from more than 1,000 forests across the world to show that climate has a relatively minor direct effect on net primary productivity, or the amount of biomass — wood or any other plant materials — that plants produce by harvesting sunlight, water and carbon dioxide.

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Record Radiation in South America
July 11, 2014 09:00 AM - Winfield Winter, ENN

Astrobiologists from the United States and Germany recorded the highest known level of solar UV radiation to reach Earth's surface. This was around 10 years ago. On December 29, 2003, the UV Index (UVI) peaked, reaching the blistering number of 43.3 over the Andes Mountains in Bolivia. To put this in context, a beachgoer in the United States would expect a UVI of 8 or 9 on a summer day. Even with an 8 or a 9, one may not escape the day without sunburn. Nonetheless, it has taken scientists 10 years to detail a report of this data while taking into account all of the variables and anomalies monitored from an international network of dosimeters — or Eldonets (European Light Dosimeter Network) — that measure UV radiation worldwide. This system is comprised of more than 100 stations across 5 continents to account for variation in the atmosphere above each station.

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SPOTLIGHT

Climate Change Decadal Pause Study — Accidental Climate Mitigation

Professor Jesse Thé and Professor Roydon Fraser, University of Waterloo
Professors Jesse Thé and Roydon Fraser from the University of Waterloo are initiating a study on the potential cause of the decade long pause on global warming. This is an interview with Prof. Thé, as a disclosure is also ENN’s Editor-in-Chief. . ENN: What is causing this decade long pause on the average global temperature increase? Prof. Thé: First of all, note that the last decade was the warmest on record. While the maximum temperatures are not increasing as fast, we are not seen a real pause on temperature increase, just a significant reduction on its growth rate. Second, researchers are not certain and our work at this stage can only be placed in the scientific method as a hypothesis. Until we develop the full analysis, all my views in this interview are based on our hypothesis that the pause in the temperature increase is cause by the aerosol formation form the massive burning of coal in China (50% of global consumption of coal) and India.

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6 Green Living Principles Every Household Should Learn

July 18th, 2014
Sometimes, you are presented with too many ideas on how to maintain sustainability in your living space and are unsure which ones are the most effective...
To read the full post and comment, visit the ENN Community Blog

Are You Smarter Than A Trash Can?

July 12th, 2014
Walking through Boston earlier this week I came across an unusually large trash receptacle. When I went closer to inspect it (throw out my trash) I noticed that it was compactor designed for sustainability.  Besides having a function to compact the trash which would require less pickups, the cans also had solar panels to be [...]
To read the full post and comment, visit the ENN Community Blog

Top 5 Ways to Chill out this Summer with ENERGY STAR

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Even when the temperature goes up, your utility bills can still stay low. With help from ENERGY STAR you can keep your cool, tame those bills, and help fight climate change...
To read the full post and comment, visit the ENN Community Blog

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