renewable energy
More Renewables On Campus
We recently talked about the increasing efforts by colleges and universities to embrace sustainability with the use of renewable energy sources. Those efforts are increasing in many places.
Giant Wind Turbines
Wind turbines have been getting bigger and bigger over the years. The reason is that bigger blades produce more power and give much more bang for the buck. A big part of the plummeting price of wind power is the increasing amount of power produced by each turbine.
China As Climate Leader
China and the United States today produce nearly half of the world’s carbon emissions, so the fight against global climate change depends greatly upon what actions the two countries take. China has undergone a dramatic transformation over the past twenty years from a largely rural society to one that is far more urbanized and far more energy intensive. In 1997, when the Kyoto Protocol on climate was negotiated, China was only responsible for 14% of global CO2 emissions. It then surpassed the US on that front in less than 10 years and now accounts for nearly 30% of the world’s emissions.
Accidental Ethanol From Carbon Dioxide
Scientists at the Oak Ridge National Laboratory in Tennessee were trying to find a series of chemical reactions that could turn carbon dioxide into a useful fuel. But the unexpected occurred: they found that the first step in their process actually got the job done all by itself. The reaction turns CO2 into ethanol, which is already used to power generators and vehicles.
Building A Better Solar Cell
The great majority of solar cells being manufactured today are based on silicon crystals. That technology has come a long way over time and has gotten cheaper and more plentiful as the industry has grown.
Renewables On Campus
Colleges and universities across the country are increasingly deploying solar arrays and other types of renewable energy. Many have set goals to become carbon neutral.
How Green Are Green Cars?
Electric cars are generally seen as the way to eliminate or at least dramatically reduce the disastrous effects of personal transportation on the environment. They still constitute only a tiny fraction of the cars on the road, but their popularity and availability is growing.
Floating Wind
Offshore wind power can supply a significant amount of energy to our hungry grid. In many places in Europe, it is doing just that. Here in US, it is just starting to be used in some places in the Northeast, with the first small offshore wind farm coming on line off the coast of Rhode Island.
Climate Change And Jobs
Combating climate change is a bit like treating a disease whose early stage symptoms are not very severe. People are not as motivated as they should be. Businesses have to comply with new regulations and spend money on new technologies, which seems like a losing proposition.
Student-Led Solar Revolution
College students have often spearheaded uprisings and revolutionary ideas. A group of BYU engineering students is trying to start a solar-cell revolution.
Wiping Out Wildlife
According to a new report from the World Wildlife Fund, the world’s animal populations have suffered widespread population declines in the last half century. And thousands of species are now scrambling to survive.
Offshore Wind In Europe
The U.S. has just turned on its first offshore wind farm off the coast of Rhode Island. In the meantime, offshore wind continues to grow by leaps and bounds in Europe. Wind energy in the European Union accounts for 12% of its electricity supply. Until 2011, offshore wind comprised only 5-10% of the newly-installed wind energy capacity; now it about one third of the new installations.
Renewable Energy As Art
When we think about the visual impact of energy plants, we usually envision ugly smokestacks belching out toxic fumes. Of course, many people also consider wind turbines to be eyesores and even solar panels are often viewed unfavorably from an aesthetic point of view.
Energy At Our Feet
There are both big ideas and small ideas for generating electricity from renewable sources. For example, even though there are now gigantic solar energy farms producing vast amounts of electricity, there are also plans to embed solar technology in the windows of homes and businesses to capture even more of the sun’s energy.
Canadian Carbon Tax
The Canadian government has chosen a carbon tax as its national policy to reduce greenhouse gas emissions. This aggressive move could have major repercussions around the world.
A Hydrogen-Powered Ferry
The Red and White Fleet has been ferrying tourists around San Francisco Bay since 1892 and is a company committed to environmental sustainability. When looking for ways to reduce the emissions from its fleet of passenger ferries, the company wondered if there was a way to eliminate emissions entirely. That question was put to researchers at Sandia National Laboratories in a very specific form: Is it feasible to build and operate a high-speed passenger ferry solely powered by hydrogen fuel cells? According to a recently-released report, the answer is yes.
Kite Power
Wind power is a growing contributor to the energy grid but it has its limitations. Wind turbines need to be located in windy places and the structures are big, get in the way of things, and are rather costly.
