Limitations of climate engineering
February 25, 2014 12:59 PM - Jan Steffen, GEOMAR Helmholtz Centre for Ocean Research Kiel
Despite international agreements on climate protection and political declarations of intent, global greenhouse gas emissions have not decreased. On the contrary, they continue to increase. With a growing world population and significant industrialization in emerging markets such as India and China the emission trend reversal necessary to limit global warming seems to be unlikely. Therefore, large-scale methods to artificially slow down global warming are increasingly being discussed. They include proposals to fertilize the oceans, so that stimulated plankton can remove carbon dioxide (CO2) from the atmosphere, or to reduce the Sun's incoming radiation with atmospheric aerosols or mirrors in space, so as to reduce climate warming. All of these approaches can be classified as "climate engineering". "However, the long-term consequences and side effects of these methods have not been adequately studied," says Dr. David Keller from the GEOMAR Helmholtz Centre for Ocean Research Kiel. Together with colleagues the expert in earth system modeling has compared several Climate Engineering methods using a computer model. The results of the study have now been published in the internationally renowned online journal Nature Communications.
Free mobile green apps
February 25, 2014 10:25 AM - Robin Blackstone, ENN
Incorporating sound environmental decisions in our daily lives has been made easier with the availability of several green apps for the mobile device. Below is a list of five useful environmental apps that are free and feature discussions and motivators for carbon footprint identification and reduction, climate change, global forest cover, product scoring based upon environmental impact, and environmental actions all aimed at making better choices for sustainable living.
Increased Ocean Acidification Rate Puts Polar Ecosystems at Risk
February 25, 2014 08:06 AM - Claire Salisbury, MONGABAY.COM
An assessment of ocean acidification, presented at the UN Climate Change Conference in Warsaw in November 2013, starkly concluded that acidity is on track to rise 170 percent by the end of this century. As many key species are sensitive to changes in acidity, this would drastically impact ocean ecosystems, with effects especially pronounced in polar regions where the cold waters intensify acidification, and which is home to many organisms that are particularly vulnerable to acidification.
COLLEGIATE CORNER: Fossil Fuels vs. Renewable Resources
February 24, 2014 01:07 PM - Flavio Avalos, Class of 2015, Wakefield High School, Arlington, VA
Fossil fuels have been the main source of the energy all over the world. They increase the amount of CO2 emissions, and the emission of CO2 is a great cause of global warming in the atmosphere, destroying the atmospheric layers. What can we do to lower the demand of fossil fuels and become more eco friendly with renewable energy resources? The percent of US transportation sector consumption is 95.4% fossil fuels (Article 3), and this shows the reliance of the US on fossil fuels. As the Institute for Energy states, "Fossil Fuels make modern life possible" and that the only reason that our modern society works and the privileges we get are all due to the fact of fossil fuels (Article 3). Need I remind you: fossil fuels are limited and could go out?
Is Weird Winter Weather Related to Climate Change?
February 24, 2014 08:02 AM - Fred Pearce, Yale Environment360
This winter’s weather has been weird across much of the Northern Hemisphere. Record storms in Europe; record drought in California; record heat in parts of the Arctic, including Alaska and parts of Scandinavia; but record freezes too, as polar air blew south over Canada and the U.S., causing near-record ice cover on the Great Lakes, sending the mercury as low as minus 50 degrees Celsius in Minnesota, and bringing sharp chills to Texas.
Kelloggs goes 'deforestation free'
February 21, 2014 01:09 PM - The Ecologist, Ecologist
The global cereal giant Kellogg has committed to sourcing palm oil that is deforestation-free. It will also ensure that carbon rich tropical peatlands are preserved.
Report Finds 42,000 Turtles Harvested Each Year by Legal Fisheries
February 21, 2014 10:05 AM - Allison Winter, ENN
Conservation awareness for sea turtles has made great progress recently, however the species are still under threat. Not only are hundreds of thousands of sea turtles killed each year from bycatch and illegal fishing but, in many coastal communities, sea turtles are considered a food source. Despite having spiritual or mythological importance, human populations consume both turtle eggs and meat. A new study conducted by Blue Ventures Conservation and staff at the University of Exeter's Centre for Ecology and Conservation has found that 42 countries or territories around the world still permit the harvest of marine turtles — and estimates that more than 42,000 turtles are caught each year by these fisheries.
Experts develop low-cost solar panels by recycling rare metals
February 21, 2014 09:45 AM - ClickGreen Staff, ClickGreen
Swedish firm Midsummer, a leading supplier of production lines for cost effective manufacturing of flexible thin film CIGS solar cells, has developed a unique process to recover leftover rare metals such as indium and gallium when manufacturing thin film CIGS solar cells.
Predicting forest canopy and species displacement
February 20, 2014 03:08 PM - David Orenstein, Brown University
Out of an effort to account for what seemed in airborne images to be unusually large tree growth in a Hawaiian forest, scientists at Brown University and the Carnegie Institution for Science have developed a new mathematical model that predicts how trees compete for space in the canopy.
Magma storage at Mount Hood compared to refrigerated peanut butter
February 19, 2014 09:10 AM - National Science Foundation
New research results suggest that magma sitting 4-5 kilometers beneath the surface of Oregon's Mount Hood has been stored in near-solid conditions for thousands of years. The time it takes to liquefy and potentially erupt, however, is surprisingly short--perhaps as little as a couple of months.