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Global Warming

A construction crew paints a white roof in downtown Washington, D.C. (Image: Maria Jose-Vi...

Previous studies have indicated that painting the roofs of buildings white could be a low tech way to reduce global warming by reflecting the sun’s rays back into space. Now the first computer modeling study to simulate the impacts of white roofs on urban areas worldwide has added more weight to such a proposal indicating that painting every roof in a city entirely white could cool the world’s cities by an average of about 0.7 degrees Fahrenheit or 0.4 degrees Celsius.  Read More

Total Ozone Mapping Spectrometer (TOMS) image of the largest ozone hole ever observed in S...

You'd think the healing of the hole in the ozone layer would be good news, but it seems that although every cloud is said to have a silver lining, they also have a gray one as well. The Antarctic ozone hole was once regarded as one of the biggest environmental threats, but researchers now argue that the ozone hole over Antarctica helped to shield this region from carbon-induced warming over the past two decades and its repair could actually increase warming in the southern hemisphere.  Read More

The USPTO's Green Technology Pilot Program will accelerate the examination of certain 'gre...

Recognizing there’s now a sense of urgency in saving the planet, the U.S. Commerce Department’s Patent and Trademark Office (USPTO) will pilot a program to accelerate the examination of certain “green” technology patent applications. According to the USPTO the move is designed to “accelerate development and deployment of green technology, create green jobs, and promote U.S. competitiveness in this vital sector.”  Read More

ETA report takes a close look at the real impact of EVs on the environment

“Electric cars should be rewarded for their energy efficiency, not for moving emissions from exhaust pipes to powerstation chimneys” says the UK's Environmental Transport Association (ETA). In a report titled "How to avoid an electric shock - Electric cars: from hype to reality", the ETA has taken a close look at electric-powered vehicles (EVs) and their associated technologies. In what could be a shock to some commuters – and governments - the report states that EVs could potentially speed climate change, rather than reduce it, and might not be as good for the planet as some of the spin suggests. Simply put, it’s not necessarily the cars themselves that will cause the damage, but the way the electricity is generated to power them and how often we drive them. For instance, EVs powered by “green energy” - wind or solar - are obviously superior, but if the electricity comes from coal, hybrids perform better.  Read More

'Green roofs' like these rooftop gardens atop the Rockefeller Center may go a long way to ...

‘Green roofs’- urban rooftops covered with plants - are gaining in popularity to help buildings reduce their reliance on air conditioning, and now scientists in Michigan are reporting they could also help fight global warming by eliminating carbon dioxide in cities, more effectively than was first thought.  Read More

Cellphone towers could soon become more than just ugly buildings to satisfy our communicat...

Atmospheric humidity can strongly influence radio signals by scattering them in all directions, weakening and making it much harder to detect on the receiving end. A team of researchers from the University of Tel Aviv has now found a new, promising way of exploiting this phenomenon to accurately predict the intensity of imminent floods and other natural catastrophes.  Read More

A part of Moofushi coral reef hit by coral bleaching
 Pic credit: Bruno de Giusti

We recently looked at problems with a last resort solution to counteract global warming by artificially shading the Earth from sunlight by injecting sulphur or small, reflective particles into the upper atmosphere. Now a new study from the Carnegie Institution has thrown further doubt on the effectiveness of such a proposal. Although it may lower the planet’s temperature by a couple of degrees, it would do little to stop the acidification of the world’s oceans that threatens coral reefs and other marine life.  Read More

The “roulette wheels” created by MIT researchers to show the range of probability of poten...

Research carried out by the MIT's Center for Global Change Science has predicted that global warming will be roughly double previous estimates – and could be even worse than that. While a major 2003 study indicated a median projected increase in earth surface warming of 2.4 degrees Celsius, the new study, which takes into account possible changes in human activities, points to a median probability of surface warming of 5.2 degrees Celsius by 2100 unless drastic action is taken.  Read More

IBN scientists convert CO2 into methanol

Scientists at the Singapore-based Institute of Bioengineering and Nanotechnology (IBN) have made an unprecedented breakthrough in transforming carbon dioxide, a common greenhouse gas, into methanol, a widely used form of industrial feedstock and clean-burning biofuel. Using "organocatalysts", researchers activated carbon dioxide in a mild and non-toxic process to produce the more useful chemical compound.  Read More

Ice thickness, estimated by combining six climate models selected for this study, is shown...

According to new research the Arctic Ocean may be ice free in the summer months much faster than previously estimated. Research based on earlier climatic models suggested that this would not occur until the end of the century, but new models suggest that the Arctic might lose most of its ice cover in as little as 30 years - three times more rapid than previous studies have indicated. If this was to occur, the amount of the arctic covered by ice at the end of the summer could be down to around 1 million square kilometers (390 000 square miles) compared with the currently coverage of 4.6 million square kilometers (1.8 million square miles).  Read More

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