Connect with us

Environment

Lord Stern: climate change risks greater than previously estimated

Published

on

The risks associated with climate change are greater than previously estimated because the model currently used fails to take into account the latest findings, according to research from Dr Simon Dietz and Prof Nicholas Stern of the Grantham Research Institute on Climate Change and the Environment.

Stern conducted a 2006 review looking at the economics of climate change, from a wide range of angles, such as water resources, food production and health. In it, he argues that climate change is the greatest and widest-ranging market failure ever seen, which presents a unique challenge for economies around the world.

Seven years after the review was published, Stern admitted that the government-commissioned report had underestimated how quickly climate change would have an impact. He is now working on a project, which is set to be published in September, that will build on the work in the 2006 review.

The new research, which will be published in a forthcoming issue of the Economic Journal, modifies the current model used to assess climate change and its economic impacts.

The researchers argue that the DICE model, which was devised in the 1990s, does not take into account the latest findings and some of the uncertainties around the major risks climate change poses are omitted.

For example, the research states, the standard model suggests that a loss of global GDP of 50% would only result after an 18C rise in global temperature, even though such warming would likely render Earth uninhabitable for many species, including humans. It also rules out the possibility that global warming of 5-6C could cause catastrophic damage.

In contrast, the new model includes the possibility that serious damage to the Earth could occur at much lower levels of global warming.

Stern, who is the chair of the Grantham Research Institute, said, “It is extremely important to understand the severe limitations of standard economic models, such as those cited in the Intergovernmental Panel on Climate Change (IPCC) report, which have made assumptions that simply do not reflect current knowledge about climate change and its potential impacts on the economy.

“Models that assume that catastrophic damages are not possible fail to take account of the magnitude of the issues and the implications of the science.”

The new model suggests that if action is not taken to cut annual emissions of greenhouse gases living standards could be affected by the end of the century. It is hoped the paper will help policymakers recognise the “immensity the potential risks of unmanaged climate change”.

Dietz, co-director of the Grantham Research Institute, explained the new model aims to take uncertainties into account. This method suggests that the “risks of climate change are bigger than portrayed by previous economic models and therefore strengthens the case for strong cuts in emissions of greenhouse gases,” he added.

Last year, following an IPCC review, Stern warned that delaying climate action was “dangerous because greenhouse gases are accumulating” and we are “locking in high-carbon infrastructure and capital”.

Photo: LeoSynapse via Freeimages  

Further reading:

‘Stern 2.0’ review to look at costs and benefits of tackling climate change

Lord Stern: delaying climate action is ‘dangerous’

Stark warnings from experts on the consequences of climate change

Lord Stern challenges people to move to a low carbon economy

Stern admits to underestimating climate change in 2006 review

Environment

Build, Buy, Or Retrofit? 3 Green Housing Considerations

Published

on

green housing techniques

Green housing is in high demand, but it’s not yet widely available, posing a serious problem: if you want to live an eco-friendly lifestyle, do you invest in building something new and optimize it for sustainability, or do you retrofit a preexisting building?

The big problem when it comes to choosing between these two options is that building a new home creates more waste than retrofitting specific features of an existing home, but it may be more efficient in the long-run. For those concerned with waste and their environmental footprint, the short term and long term impacts of housing are in close competition with each other.

New Construction Options

One reason that new construction is so desired among green living enthusiasts is that it can be built to reflect our highest priorities. Worried about the environmental costs of heating your home? New construction can be built using passive solar design, a strategy that uses natural light and shade to heat or cool the home. Builders can add optimal insulation, build with all sustainable materials, and build exactly to the scale you need.

In fact, scale is a serious concern for new home buyers and builders alike. Individuals interested in green housing will actively avoid building more home than they need – scaling to the square foot matter because that’s more space you need to heat or cool – and this is harder to do when buying. You’re stuck with someone else’s design. In this vein, Missouri S&T’s Nest Home design, which uses recycled shipping containers, combines the tiny home trend with reuse and sustainability.

The Simple Retrofit

From an environmental perspective, there’s an obvious problem with building a new home: it’s an activity of mass consumption. There are already 120 million single-family homes and duplexes in the United States; do we really need more?

Extensive development alone is a good enough reason to intelligently retrofit an existing home rather than building new green structures, but the key is to do so with as little waste as possible. One option for retrofitting older homes is to install new smart home technology that can automate home regulation to reduce energy use.

Real estate agent Roxanne DeBerry sees clients struggle with issues of efficiency on a regular basis. That’s why she recommends tools like the Nest Thermostat, which develops a responsive heating and cooling schedule for the home and can be remotely adjusted via smartphone. Other smart tools for home efficiency include choosing Energy Star appliances and installing water-saving faucets and low-pressure toilets. These small changes add up.

Big Innovations

Ultimately, the most effective approach to green housing is likely to be aggressive retrofitting of everything from period homes to more recent construction. This will reduce material use where possible and prevent further aggressive land use. And finally, designers, activists, and engineers are coming together to develop such structures.

In the UK, for example, designers are interested in finding ways to adapt period houses for greater sustainability without compromising their aesthetics. Many have added solar panels, increased their insulation levels, and recently they even developed imitation sash triple glazed windows. As some have pointed out, the high cost of heating these homes without such changes will push these homes out of relevance without these changes. This is a way of saving existing structures.

Harvard is also working on retrofitting homes for sustainability. Their HouseZero project is designed for near-zero energy use and zero carbon emissions using geothermal heating and temperature radiant surfaces. The buildings bridge the gap between starting over and putting up with unmanageable heating and cooling bills.

It will take a long time to transition the majority of individuals to energy efficient, green housing but we’re headed in the right direction. What will your next home be like? As long as the answer is sustainable, you’re part of the solution to our chronic overuse – of land, energy, water, and more.

Continue Reading

Environment

How the Auto Industry is Lowering Emissions

Published

on

auto industry to clean air pollution

Currently, the automotive industry is undergoing an enormous change in a bid to lower carbon emissions. This has been pushed by the Government and their clean air plans, where they have outlined a plan to ban the sale of petrol and diesel cars by 2040.

Public Health Crisis

It is said that the levels of air pollution lead to 40,000 early deaths in the UK, with London being somewhere that is particularly bad. This has led to the new T-Charge, where heavy polluting cars will pay a new charge on top of the existing congestion charge. Other cities have taken action too, with Oxford recently announcing that they will be banning petrol and diesel cars from the city centre by 2020.

Eco-Friendly Vehicles

It is clear that the Government is taking action, but what about the auto industry? With the sale of petrol and diesel plummeting and a sharp rise in alternatively fuelled vehicles, it is clear that the industry is taking note and switching focus to green cars. There are now all kinds of fantastic eco-friendly cars available and a type to suit every motorist whether it is a small city car or an SUV.

Used Cars

Of course, it is the cars that are currently on the road that are causing the problem. The used car market is enormous and filled with polluting automobiles, but there are steps that you can take to avoid dangerous automobiles. It is now more important than ever to get vehicle checks carried out through HPI, as these can reveal important information about the automobile’s past and they find that 1 in 3 cars has a hidden secret of some kind. Additionally, they can now perform recall checks to see if the manufacturer has recalled that particular automobile. This allows people to shop confidently and find vehicles that are not doing as much damage to the environment as others.

Public Perception

With the rise in sales of alternatively fuelled vehicles, it is now becoming increasingly more common to see them on UK roads. Public perception has changed drastically in the last few years and this is because of the air pollution crisis, as well as the fact that there are now so many different reasons to switch to electric cars, such as Government grants and no road tax. A similar change in public opinion has happened in the United States, with electric car sales up by 47% in 2017.

Progress

The US is leading the way for lowering emissions as they have declined by 758 million metric tons since 2005, which is the largest amount by far with the UK in second with a decline of 170 million metric tons. Whilst it is clear that these two nations are doing a good job, there is still a lot of work that needs to be done in order to improve the air quality and stop so many premature deaths as a result of pollution.

With the Government’s plans, incentives to make the change and a change in public perception, it seems that the electric car revolution is fully underway.

Continue Reading
Advertisement

Facebook

Trending