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Found 2 results

  1. For the first time, the CO2 levels in the atmosphere have hit 400 ppm (parts per million). This threshold represents the growing influence of humans on the climate. The man-made emissions of CO2 have increased the concentration in the atmosphere from about 270-280 ppm in the 1700s to the current record – a 43% increase. According to scientists, this is surprising considering the rapid growth of global CO2 emissions from the frequent burning of oil, coal and natural gas. Last year, the global CO2 emissions reached 38.2 billion tons. This is an increase of around a billion tons more compared to the previous year. This means that over 2.4 million pounds of CO2 are spewed into the atmosphere: Every second. The increasing CO2 emissions are accelerating global warming, also known as the greenhouse effect. Future temperatures depend on the amount of CO2 that accumulated in the atmosphere and so, there is a need to reduce those emissions in order to minimize global warming. Official data: http://www.epa.gov/climatechange/ghgemissions/global.html http://www.eea.europa.eu/data-and-maps/data/data-viewers/greenhousae-gases-viewer How To Reduce Global CO2 Emissions Since the increasing CO2 emissions are often associated with burning of oil, coal and natural gas, the best way to reduce them is to adopt green practices. For example, coal power should be replaced by zero-carbon nuclear power and renewable wind power. Natural gas which is used for heating and driving motors should be replaced by heat pumps and electric motors. Finally, transportation sector consumes over 70 percent of petroleum as motor fuels. The consumption of transportation petroleum can be significantly reduced by using electric vehicles. The Current State Of Green Car Industry With the need to reduce CO2 emission, electric cars have emerged as the viable alternative to the polluting cars that most people drive today. An electric car relies on an electric motor for propulsion. They use battery and not petrol. The current green car industry is dominated by the 6 car makers: Chrysler Ford GM Toyota Honda and Nissan The price of electric cars is much more than gasoline vehicles of the same size. For example, the price of the least expensive electric car on the market now, the Smart ForTwo Electric Drive car, is twice as much as the gasoline ForTwo. However, the operation cost of electric cars is a much less. For example, if gasoline costs $4 per gallon, your 25-mpg gas car will need a fuel of $16 to cover every 100 miles. On the other hand, an electric car uses $1-6.50 in electricity for the same distance. One of the most popular electric car models is the 2013 Nissan Leaf. It has recorded the highest sales. According to Klosters, (Australian car dealer) and their News section page about this vehicle , the new 2013 Nissan LEAF car is 6 times cheaper and more efficient as compared to a petrol-fueled car. More About LEAF If you are driving the Nissan LEAF for the first time, you will be impressed by the little difference between the car and comparable internal combustion hatchbacks. It is not a golf cart, and accelerates well just like most gasoline-fueled cars of the same size. It can comfortably accommodate four people (or even five for shorter distances), and has a considerable cargo room. The LEAF is a highly capable daily car whose operating cost is a fraction of gas-powered cars provided you pay attention to the battery charge state. The 2013 LEAF maintains the same styling as its 2011 predecessor, which is a good thing. It has a contemporary and conventional look and even its allowances for aerodynamics (such as the protruding headlights) look decent on the car. The base models have 16-inch steel wheels (along with wheel covers), while other models have alloy wheels. The distinguishing feature of the range-topping SL models is the solar panel attached to the roof spoiler, which provides supplemental charging for the 12-volt battery of the LEAF. The car is powered by an 80-kilowatt (107HP) electric motor which is driven by a 24-kWh lithium-ion battery. Although the vehicle is single-speed, it takes 10 seconds to run from 0-60 mph thanks to the instantly available motor torque of 207 pound-feet and the car can hit a maximum speed of up to 90-mph. Both figures perfectly fit its intended purpose. The 2013 LEAF handles competently and predictably. However, people who are seeking maximum entertainment behind the wheel may not be satisfied with the numb steering and detached road feel of the car. But since the primary mission of the car is to move from one point to another in relative comfort, that cannot hinder sales. As mentioned earlier, you need to pay careful attention to the car’s battery charge state. When completely depleted, the 24 kWh battery pack may take nearly twenty hours to reach its full charge capacity on standard home current (110V). Installing a 240V Level 2 charging station (sold by Nissan dealers) in your home will significantly reduce that time, and the new 2013 6.6-kilowatt charger (which comes with all Leafs except base models) can charge the battery to its full capacity in only four hours. That’s a great improvement compared to the previous 3.3-kilowatt charger, which took up to 10 hours to fully recharge from a 240V Level 2 charging station. With the advancement in technology today, a smartphone can be used to operate or control almost anything and the LEAF is no exception. Through a smartphone app, you can set charging times to maximize on off-peak rates, heat the cabin and cool the cabin for summer comfort. The smartphone app also allows you to keep tabs on the charging process as you will be alerted in case charging is interrupted. But if you don’t have a smartphone, don’t worry as most of these functions can be controlled via the display screen of the car. Video: http://www.youtube.com/watch?v=tYWjd0-NuBI The Future Of Green Car Industry Although the electric cars are a bit costly today, the price will obviously reduce. More and more people will opt for the cars due to their benefits to the environment. There shall come a time when combustion cars would be so few and the air would not be full of CO2 that gasoline-fueled cars are often associated with. In fact, Nissan has tried to capture that period by creating an aromatic blueprint’ which imitates how the world would smell like in a green future with zero-carbon emission cars. Resources: http://www.greencarreports.com/news/leaf http://www.thegreencarwebsite.co.uk/blog/index.php/2013/12/12/nissan-creates-scent-of-the-zero-emission-future/ http://www.thegreencarwebsite.co.uk/blog/index.php/2010/12/09/cost-of-nissan-leaf-falls-as-experts-predict-47-residual-value/
  2. Increasing global emissions of carbon dioxide (CO2), a heat-trapping gas, are pushing the world into dangerous territory, closing the window of time to avert the worst consequences of higher temperatures, such as melting ice and rising seas. Since the dawn of the Industrial Revolution, carbon emissions from burning fossil fuels have grown exponentially. Despite wide agreement by governments on the need to limit emissions, the rate of increase ratcheted up from less than 1 percent each year in the 1990s to almost 3 percent annually in the first decade of this century. After a short dip in 2009 due to the global financial crisis, emissions from fossil fuels rebounded in 2010 and have since grown 2.6 percent each year, hitting an all-time high of 9.7 billion tons of carbon in 2012. Carbon emissions would have risen even faster were it not for the 7 percent drop among industrial countries since 2007 - a group that includes the United States, Canada, Europe, Russia, Australia, New Zealand, and Japan. The United States, long the world's largest emitter until it was eclipsed by China in 2006, cut carbon emissions by 11 percent over the past five years to 1.4 billion tons. The biggest drop was in emissions from coal - which is primarily used to generate electricity - as power plants switched to cheaper natural gas and as the use of carbon-free wind energy more than quadrupled. U.S. emissions from oil, mostly used for transportation, also dipped. (See data.) Carbon emissions from fossil fuel burning in Europe, as a whole the third largest emitter, fell 9 percent from 2007 to 2012. Emissions in Italy and Spain shrank by 17 and 18 percent, respectively. The United Kingdom's emissions dropped by 11 percent to 126 million tons. Germany's emissions fell by 4 percent to 200 million tons. These countries have been leaders in either wind or solar energy or both. Russia and Japan are two industrial countries that did not see an overall decline in carbon emissions over the past five years. Russia had an uptick in oil use, increasing its emissions by 2 percent to 449 million tons. And in Japan, the quick suspension of nuclear power generation after the Fukushima disaster led to more natural gas and oil use, pushing emissions up 1 percent to 336 million tons in 2012. CO2 emissions in developing countries surpassed those from industrial countries in 2005 and have since continued to soar. China's carbon emissions grew by 44 percent since 2007 to 2.4 billion tons in 2012. Together the United States and China account for more than 40 percent of worldwide emissions. Emissions in India, home to more than a billion people, overtook those in Russia for the first time in 2008. From 2007 to 2012, India's emissions grew 43 percent to reach 596 million tons of carbon. Carbon emissions in Indonesia, another fast-growing economy, have exploded, growing 52 percent to hit 146 million tons in 2012. Although emissions from developing countries now dominate, the industrial countries set the world on its global warming path with over a century's worth of CO2 emissions that have accumulated in the atmosphere. Furthermore, emissions estimates discussed here include only those from fossil fuels burned within a country's borders, meaning that the tallies do not account for international trade. For example, emissions generated from producing goods in China destined for use in the United States are added to China's books. When emissions are counted in terms of the final destination of the product, the industrial countries' carbon bill increases. On a per person basis, the United States emits 4.4 tons of carbon pollution - twice as much as in China. The highest per capita carbon emissions are in several small oil and gas producing countries. In 2012, Qatar spewed out 11 tons of carbon per person. Trinidad and Tobago is next with 9 tons of carbon per person, and Kuwait follows at 7.5 tons. Fossil fuels are not the only source of CO2 emissions. Changing the landscape, for example by burning forests, releases roughly 1 billion tons of carbon globally each year. Brazil and Indonesia have high levels of deforestation and are responsible for much of the current carbon emissions from the land. About half of the CO2 that is released through fossil fuel burning or land use changes stays in the atmosphere. The other half is taken up by the oceans or by plants. As more CO2 is absorbed by the world's oceans, the water becomes more acidic. This change in ocean chemistry can strip away the building blocks of coral reefs, weakening an important link in the oceanic food chain. Scientists warn that the oceans could eventually become saturated with CO2, compromising their capacity to absorb our carbon emissions, with serious consequences for the global thermostat. For some 800,000 years, the amount of CO2 in the atmosphere did not go above 300 parts per million (ppm). But in the 250 years following the start of the Industrial Revolution, enough CO2 built up to bring the average concentration to nearly 394 ppm in 2012. Throughout each year, the concentration of the gas fluctuates, reaching its annual peak in the spring. In May 2013, the CO2 concentration briefly hit 400 ppm, a grim new milestone on the path of climate disruption. Never in human history has the atmosphere been so full of this odorless and colorless yet powerfully disruptive gas. CO2 acts like the glass of a greenhouse, trapping heat. Since humans began burning fossil fuels on a large scale, the global average temperature has risen 1.4 degrees Fahrenheit (0.8 degrees Celsius), with most of the increase occurring since 1970. The effects of higher temperatures include rising sea levels, disappearing Arctic sea ice, more heat waves, and declining yields of food crops. More warming is in the pipeline as the climate system slowly responds to the higher CO2 concentrations. Reports from international institutions, such as the International Energy Agency, based on work by thousands of scientists emphasize that little time remains to cut emissions and avoid a climate catastrophe. The World Bank notes that absent any policy changes, the global average temperature could be 9 degrees Fahrenheit warmer by the end of this century, well above what human civilization has ever witnessed. But a different future - one based on a clean energy economy - is within our reach. Germany, not a particularly sunny country, has harnessed enough of the sun's rays to power some 8 million homes, for example. The United States has enough wind turbines installed to power more than 15 million homes. Kenya generates roughly a quarter of its electricity from geothermal energy. This is but a glimpse of the enormous potential of renewable energy. The question is not whether we can build a carbon-free economy, but whether we can do it before climate change spirals out of control. By Emily E. Adams. For a plan to stabilize the Earth's climate, see "Time for Plan B" and more at www.earth-policy.org.