A build-to-scrap analysis by the Union of Concerned Scientists (UCS) found that -- even when you consider power plant emissions - U.S. electric cars produce less than half the global warming emissions of comparable gasoline-powered vehicles.
Rachael Nealer, a UCS scientist and the report's author, said: "Although a battery electric vehicle has no tailpipe emissions, the total global warming emissions ... depend on the sources of the electricity that charge the vehicle's batteries and on the efficiency of the vehicle." When it tallied all the greenhouse gas emissions from every aspect of auto manufacturing and operations, the UCS found that electric vehicles beat their gasoline counterparts in every U.S. region. In upstate New York, which is rich with renewable energy resources, electric cars generated pollution equaling a theoretical gas vehicle that gets 135 mpg. In California, to beat the electric car, a conventional car would need to do better than 87 miles per gallon. In states such as Colorado, Kansas and Missouri, where electricity comes largely from fossil fuels such as coal, electric cars offered the equivalent of a car getting 35 to 36 mpg.
The report relied on data produced by the Department of Energy, the Environmental Protection Agency, the Argonne National Laboratory and from auto manufacturers. It considered emissions from oil extraction, refining and transportation to gas stations. On the other hand, making lithium-ion battery packs also produces a lot of pollution. UCS based its modeling on the Nissan Leaf and Tesla Model S -- the two best-selling electric cars in the U.S. Each has a different greenhouse gas emissions profile. The bigger the battery, the more pollution results from its production. That's why the smaller Nissan -- which also has less than half the range of a Tesla -- offsets its excess manufacturing emissions in about 4,900 miles, or six months of driving. The Tesla offset comes within 19,000 miles, or 16 months of operation.
Nealer expects the emissions profile of electric cars to continue to improve over their gasoline counterparts as technology advances and electricity generation becomes cleaner. She considers electric vehicles essential to achieve the deep emissions reductions by 2050 needed to avoid the worst effects of climate change. "It is really impressive how much cleaner electric cars have become in just the last three years," she said.
Can we end hunger and poverty, halt climate change and achieve gender equality in the next 15 years? The governments of the world think we can. Meeting at the UN in September 2015, they agreed to a new set of Global Goals for the development of the world to 2030. Social progress expert Michael Green invites us to imagine how these goals and their vision for a better world can be achieved.
Many farmers in Tanzania have switched to growing sweet potato as a strategy to cope with drought and improve food security. In Uganda, 55,000 household now grow sweet potato and 237,000 are expected to by 2018.
Astrophysicist Adam Frank said: "The defining feature of a technological civilization is the capacity to intensively 'harvest' energy. But the basic physics of energy, heat and work known as thermodynamics tell us that waste, or what we physicists call entropy, must be generated and dumped back into the environment in the process." Globally, we generate around 100 billion megawatt hours of energy every year and dump 36 billion tons of carbon dioxide into the earth's atmosphere and oceans, not to mention rivers, coal slurry impoundments ("sludge ponds"), aquifers, and underground "sequestration", all of which goes a very long way to explaining the overheating planet and acidifying oceans.
Everything from biodiversity to ocean chemistry is being degraded, entropy due to global population growth and human activity is a major cause. Climate change is happening; the signs are abundant, and too many voters are indifferent. What is needed is 1) a policy prescription for the government and 2) an action program for the rest of us.There is rarely any mention of conservation as a kind of categorical public-policy imperative.
Even though population is nearly 7.3 billion and rising, nobody wants to talk about population in part because they think most everything that can be done about that issue has already been or is being done.
Maybe our indifference will give way to our instinct for survival in time. Maybe we will come to understand that we have to conserve in order to survive, reorganize our cities and societies, depend less on long-distance transport and travel, and do more on a local level. We have to drive fewer cars fewer miles, build mass transit systems, and subsidize riders for being good citizens. We have to consume less and conserve more of everything -- from water and fossil fuel to wildlife and rain forests. We have to do a much better job of protecting the atmosphere, oceans, topsoil.
Our species has caused this problem and there will be a lot more of us either contributing to the problem or becoming the solution in the future. We have to learn to do more with less. A lot less. It probably won't happen any time soon on the scale that's needed, but it will happen sooner or later because it has to. Let's hope it won't be too late.
We live unsustainably because our drive to survive is more powerful than reasonJanuary 19, 2015, Psychology Today By: David Ropeik
The year 2014 was the hottest year on Earth since 1888, the first year such temperatures were recorded. December was the hottest for any year ever. Six of the months last year, in fact, hold that record. The last time a 'coldest month ever' was recorded, was 1916.
Planetary Boundaries is a survey of nine basic systems critical to life on Earth as we know it. An updated review finds that human activity has pushed past the boundary in four of those categories; climate change, loss of biosphere integrity (things like genetic diversity because of species loss), land-system change (soil and forestation loss, etc.) and altered biogeochemical cycles (how the biosphere uses and replaces the critical elements of phosphorus and nitrogen). The study can be found at http://www.stockholmresilience.org/21/research/research-news/1-15-2015-planetary-boundaries-2.0---new-and-improved.html
Transgressing a boundary increases the risk that human activities could inadvertently drive the Earth System into a much less hospitable state, damaging efforts to reduce poverty and leading to a deterioration of human wellbeing in many parts of the world, including wealthy countries.
Most of us probably didn't notice any of those changes, which is the problem that has all but guaranteed the serious crash for Life on Earth as We Know It. Most of the seven billion humans on the planet took the resources necessary for safety and survival from the system, and put back into the system both their products and their wastes. Each us us satisfying our own needs but cumulatively taking from a system more resources than it has to offer, and putting back more waste than it can handle (air pollution in Beijing recently got so bad it was beyond the highest and most dangerous levels on the health scale designed to measure such things).
Even though we, and all current Life on Earth, face an unavoidable crash, we are compelled from the deepest level of our genes and survival instincts to taking more from the system than it can provide and put back in more waste than it can handle. Many species live unsustainably in their finite ecosystems and when their demands on the system outpace supply, move on. We are, however, the only animal where the system limits are the entire biosphere itself.
Many people pin their hopes on technological solutions to some of our challenges (cleaner power, advances in agriculture and food production, reduction in pollution and waste), less violence as more of us live closer together, and even the faith that human reason itself can, when the crises really start hitting the fan, figure out ways to stop doing the damage we're doing, undo the harm we've already done, or adapt to at least some of the harms we face.
If we get a little more realistic about just how much/little human reason can help us conquer our deepest animal instincts, and a little less naïve that we can 'live with restraint', we might sooner get to the task of preparing for what's to come rather than pretending we can head it off. It is probably in the best interest of Life on Earth As We Know It if humans accepted that there will be a steep price to pay for our unsustainable ways, that given what we've already done this price is unavoidable, and that pretending we can head this off and preparing as soon as possible is urgently needed if we're going to at least keep that cost as low as possible.
I watched the piles of feces go up the conveyer belt and drop into a large bin. They made their way through the machine, getting boiled and treated. A few minutes later I took a long taste of the end result: a glass of delicious drinking water.
Because a shocking number of people, at least 2 billion, use latrines that aren't properly drained. Others simply defecate out in the open. The waste contaminates drinking water for millions of people, with horrific consequences: Diseases caused by poor sanitation kill some 700,000 children every year, and they prevent many more from fully developing mentally and physically. If we can develop safe, affordable ways to get rid of human waste, we can prevent many of those deaths and help more children grow up healthy.
The project is called the Omniprocessor, and it was designed and built by Janicki Bioenergy, an engineering firm based north of Seattle. I recently went to Janicki's headquarters to check out an Omniprocessor before the start of a pilot project in Senegal. The Omniprocessor is a safe repository for human waste. Today, in many places without modern sewage systems, truckers take the waste from latrines and dump it into the nearest river or the ocean-or at a treatment facility that doesn't actually treat the sewage. Either way, it often ends up in the water supply. If they took it to the Omniprocessor instead, it would be burned safely.
The next-generation processor, more advanced than the one I saw, will handle waste from 100,000 people, producing up to 86,000 liters of potable water a day and a net 250 kw of electricity. If we get it right, it will be a good example of how philanthropy can provide seed money that draws bright people to work on big problems, eventually creating a self-supporting industry.
Did you know that Bangladesh scored higher than the U.S. on the Happy Planet Index?
Each of the three component measures - life expectancy, experienced well-being and Ecological Footprint - is given a traffic-light score based on thresholds for good (green), middling (amber) and bad (red) performance. These scores are combined to an expanded six-colour traffic light for the overall HPI score, where, to achieve bright green - the best of the six colours, a country would have to perform well on all three individual components. The scores for the HPI and the component measures can be viewed in map or table-form. By clicking on any individual country in the map or table you can explore its results in more detail.
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An anallysis from the thinktank Chatham House reveals that the global livestock industry produces more greenhouse gas emissions than all cars, planes, trains and ships combined. However, twice as many people think transport is the bigger contributor to global warming, according to a survey from Ipsos MORI.
Rob Bailey, the report's lead author said "A lot is being done on deforestation and transport, but there is a huge gap on the livestock sector."
Keeping meat eating to levels recommended by health authorities would not only lower emissions but also reduce heart disease and cancer.
The report shows that soaring meat demand in China and elsewhere could tip the world's climate into chaos. Emissions from livestock, largely from burping cows and sheep and their manure, currently make up almost 15% of global emissions. Beef and dairy alone make up 65% of all livestock emissions.
Meat consumption is expected to rise 75% by 2050, compared with 40% for cereals.
Two other studies show that agricultural emissions will take up the entire world's carbon budget by 2050, with livestock a major contributor. Every other sector -- energy, industry and transport -- would have to be zero carbon to keep within the budget. "Dietary change is essential if global warming is not to exceed 2C."
The consumer survey in the report found a link between the awareness of climate change impacts and the willingness to change behavior. Acceptance that human activities cause climate change was significantly higher in China, India and Brazil than in the US, UK and Japan.
Brigitte Alarcon of WWF said: "We can cut a quarter of our climate emissions from the European food supply chain by eating more pulses, fruit and vegetables and by reducing our meat consumption. National governments should improve food education to encourage healthy eating habits and environmental sustainability as a first step."
In the UK a YouGov poll found 20% saying they have cut the amount of meat they eat over the last year, with only 5% say they are eating more.