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The benefits of urban trees

April 15th, 2009

I’ve been on a bit of a nature/biodiversity tip recently. Here’s a great list of reasons why trees should be included in urban design – some common sense, some more unusual – from the Forestry Commission’s London Region Trees and Design Action Group report “No Trees, No Future” Trees in the Urban Realm.

Environmental

  • Reduce localised temperature extremes (The Urban Heat Island)
  • Provide shade, making streets and buildings cooler in summer
  • Help to improve air quality by reducing dust and particulates
  • Improve environmental performance of buildings
  • Help to reduce traffic noise, absorbing and deflecting sound
  • Help to reduce local wind speeds
  • Increase biodiversity and provide food and shelter for wildlife
  • Assist in land remediation
  • Reduce the effects of flash flooding by rainfall interception

Social

  • Improve the quality and perception of the urban environment
  • Create community focal points and landmark links
  • Create sense of place and local identity
  • Benefit communities socially by instilling higher public esteem and pride for an area
  • Positive impact on both physical and mental health and well being
  • Positive impact on crime reduction
  • Improve health in the urban population

Economic

  • Have the potential to increase residential and commercial property values by between 7% to 15%
  • Improve the environmental performance of buildings and therefore the economic performance through reducing heating and cooling costs
  • Can provide mature landscapes that confer a premium for development sites
  • Assist the appreciation of property values proportionate to their scale as they grow larger
  • Creating a positive perception for prospective purchasers of property
  • Enhance the prospects of securing planning permission
  • Improve health in the urban population, thus reducing healthcare costs
  • Provide a potential long term renewable energy resource

For all the references, and loads of guidance download the 60 page pdf (including case studies) here. And it looks like the guidance could be taken on by DCLG in the future, so worth getting to know.

The one which really jumped out as being counterintuitive to me was the “Positive impact on crime reduction”. Surely thieves can hide behind trees?

Turns out studies (pdf, 25 pages) report: “Residents living in “greener” surroundings report lower levels of fear, fewer incivilities, and less aggressive and violent behavior”.

Fascinating. Turns out dense vegetation causes fear of crime, rather than crime itself.

hat-tip to Hattie Harman for alerting me to the report in her excellent Footprint blog over at AJ.

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How to talk to a climate sceptic

November 15th, 2006

Gristmill have a fantastic series of posts available here which give a myriad of responses to climate sceptics, including arguments against such nuggets as Global warming is a hoax and A warmer world will be better.  As we gear up for Xmas party schmoozing season, it might be a good idea to gem up on the sceptic’s arguments and have some smart answers to retaliate with…

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Futerra’s 10 rules of sustainable communications

November 15th, 2006

I recently came across Futerra’s ten rules of sustainable communications.  It’s a great little manifesto and reinforces the fact that you can’t scare people into going green.

  1. Big picture – make connections, demonstrate long term thinking, blow myths
  2. Technically correct – be trustworthy, provide transparency, give real facts
  3. Be cool – be sexy, mainstream, non-patronising, brave – stand out!
  4. Belong – join a massive worldwide change, start positive conformity, join a success
  5. Only stories work – empathy and emotions are powerful, use stories to hold people’s attention
  6. Optimism – sustainable development is achievable, avoid too much guilt
  7. Glory button – ’sustainable development makes you a great person and we love you for it’
  8. Change is for all – break stereotypes, use inclusive language and images, push mass ownership
  9. We need more heroes – introduce icons to emulate – ‘be like me’
  10. Personal circle – relate big ideas to everyday life, give them a familiar context

 

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The Khazzoom-Brookes postulate – or why energy efficiency might not be the answer to a low carbon economy

October 24th, 2006

A fascinating summary over at EurActiv.com on why energy efficiency may not be the panacea some of us believed it to be. I’ve argued in the past that the way to reduce carbon is to start with the beginning and reduce the energy you use. However, some studies have looked at this in macroeconomic terms (i.e. a big scale):

Building on the work of nineteenth century economist Stanley Jevons, they have looked at the “rebound” or “take-back” effects of energy efficiency policies. This effect takes place when the energy savings produced by the measure are taken back by consumers in the form of higher consumption. An example: a household, which has made big energy savings over the year might, at the end of the year, decide to buy a new car with the money they saved. It is questionable therefore whether, on a macro-economic level, they contributed to less energy consumption.

Interesting. It even has a great name – the Khazzoom-Brookes postulate – and I’m always a sucker for a theory with a great name. The good news is that the magnitude of this ‘rebound effect’ has not yet been agreed upon. General concensus is that it is small enough that the overall effect is still positive (i.e. net carbon is reduced). Always good to know what theories the nay-sayers may throw your way and what the counter-argument could be.

Digging a little deeper, I have found that Khazzoom-Brookes was first put forward by an American economist, Harry Saunders, in 1992. The argument centres around the ‘top-down’ (taxing fuel, etc) versus a ‘bottom-up’ (energy conservation) approach, with Khazzoom-Brookes being in favour of ‘top-down’.

I still stand by the ‘bottom-up’ approach, but I see no reason why ‘top-down’ cannot be employed concurrently? But my grasp of economics* is shaky at best, and I need to do more reading. Can anyone recommend a site or book which will enlighten me?

*BTW, my knowledge of ecomonics, politics and history (the liberal arts?) has multiplied tenfold since starting this blog. Coming from a mostly mathematical, engineering background this has been a bit of a wake-up call. Unlike many engineering problems, sustainability does not have a black and white, clear-cut solution. Which makes life interesting…

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Energy Saving Trust embraces Flickr and asks us all to commit to saving 20%

October 16th, 2006

EST

The Energy Saving Trust have embraced the power of Flickr to promote their campaign urging us all to save 20% of the energy we currently use.
If, like me, you have hundreds of photos on Flickr, the site can be quite slow to load. You can also search for images of where you would like to nominate from other’s Flickr photos. Once you have chosen your place, you write a short piece about why it is special to you.

The next step is to choose as many of the 10 steps to reducing carbon as you wish to commit to. As you choose them, the value in both a percentage and kilos of CO2 is totted up for you.

You can then send the postcard you create to your friends. It’s an entertaining if not entirely productive way to kill some time. Not sure it’s going to save the planet, but a novel way to raise awareness. Could see it would be a fun thing to do with kids.

As I already do the things I’ve commited to, and I suspect most people who read this do too, it’s preaching to the converted, but here’s the message they send to your nominated friends:

Mel Starrs has chosen you as someone who is concerned about climate change and, like them, is prepared to make a commitment.

If we all commit to save 20% of the energy* we use everyday, together we can help prevent climate change. That’s why we, the Energy Saving Trust are asking everyone in the UK to make a commitment to save their 20% and help preserve their favourite place in the UK.

Mel Starrs has committed to:

- Only boil as much water as I need
- Turn down my thermostat by 1degC
- Turn appliances off standby
- Replace 3 lightbulbs with Energy Saving Recommended ones
- Buy Energy Saving Recommended appliances
- Wash your laundry at 30 degrees C
- Not use the car for short journeys

These measures will save 8.7% of the energy they use and 887 tons of carbon dioxide a year.

Click here http://www.energysavingtrust.org.uk/commit/index.php?postcardURI=233 to view Mel Starrs’s commitment

Click on this link http://www.energysavingtrust.org.uk/commit to make your own commitment and tell everyone which place you want to save your 20% for.

Commit to save your 20% now.

The Energy Saving Trust.

* One thing niggles me about the site – they don’t differentiate between carbon and energy, probably in an attempt not to muddy the waters. But it is important to remember that the commitment is to reduce carbon by 20%, not energy. For instance, by switching from electric heating to a gas boiler, you could be heating the house to the same temperature, using the same amount of energy, but saving a considerable amount of carbon.

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It’s not what you say, it’s how you say it

October 2nd, 2006

Turns out the message isn’t half as important as how the message is conveyed. Sounds rational, doesn’t it? I started writing this post with a view to reviewing carbon rationing but it quickly evolved into a lesson on communicating and persuasion. I’ll begin with a video of Mayer Hillman on YouTube from BBC Breakfast on Carbon Rationing:

Debate on BBC Breakfast between Professor Mayer Hillman and Professor James Woudhuysen about the Carbon Ration Card proposal announced by Secretary of State for Environment, Food & Rural Affairs David Miliband.

I have read Mayer’s book “How We Can Save the Planet” and there is some useful and interesting information within it. A review of the book and some lively comments are available over at World Changing. Mayer argues the case for contraction and convergance and most of the time he has me convinced. What I do have issue with Mayer over is the tone of his message, both in the book and on the clip above. Despite the fact that I agree with most of what Mayer preaches, after watching the clip above, I was more convinced by James Woudhuysen. James does have some valid points but they are less to do what he is proponent for (technological innovation*) and more to do with his attack on Mayer’s ‘finger-wagging’ tactics.

I explained in an earlier post how you can’t scare people into being green. Unfortunately the overriding message throughout Mayer’s book (and the interview above) is that of guilt and regret. We know this tactic will not wash it with most humans. It a real shame as I do believe he has an important message that deserves to be heard – but he’s not saying it in a way which people will listen to.

Conversely Kathy Sierra has pointed me towards this great article in Fast Company which also points out that telling people that something is good for them is also inadequate motivation for them to change behaviours. Instead the author, Alan Deutschman, suggests that by invoking feelings of hope and optimism, behaviours will change. Reframing the positives to fit the perspective of those you wish to persuade, coupled with a short, sharp shock approach and a support mechanism or community is also advocated.

So as an industry our challenge is how to persuade people to change their behaviours using hope and optimism. Quite a challenge.

An easy win normally cited is installing automated (‘idiot proof’) energy conservation measures such as daylight saving sensors on lighting, intelligent BMS and automated window systems. But even this can be fraught with difficulty. Humans, by their very nature, just aren’t happy unless they perceive that they have some control over their environment. The trick is getting the balance right between an ‘nannying’ of occupants who can be happy that carbon is reduced but miserable that they can’t change the temperature, or giving free rein to occupants, who will be deliriously happy that they can turn the cooling down to 19ºC but wracked with guilt over the consequences on the environment. Forcing a behaviour change will not work, it has to be on the terms of those whose behaviour you are trying to change.
The UK government has a useful leaflet available with advice for communicating climate change.

current attitudes

They give the following advice:

Research has shown that there are some important issues you should consider when you communicate climate change:

– People are rarely motivated to act by threats to their long-term survival – think about how many people still smoke despite the known risks. In fact, when it comes to climate change, people are not even normally motivated by concern for their children’s future.

– Don’t create fear about climate change without showing what people can do about it. If people can simply avoid frightening issues, or put them to the back of their minds, they will.

– It’s often unhelpful to criticise behaviour that people consider normal in their home or family. Instead, make behaviour that reduces the threat of climate change seem positive and desirable.

– Don’t rely solely on logic, facts or even money-saving incentives – people need to be inspired and provoked.

– Encourage discussion between individuals in your audiences – debate raises awareness.

– Associate climate change with people** your audience admire or respect, or with things they care about, like home improvement or local green spaces.

– Be consistent in your use of language and your explanation of climate change – this will help it stick in people’s minds.

future-attitudes.bmp

This goes some way to explaining the success of certification schemes such as BREEAM and LEED. They provide frameworks to demonstrate what can be done. The goal of achieving a better rating than contemporary buildings makes it desirable and provides something to aspire to. This isn’t the complete answer to our problems though. Any further thoughts anyone?
I’ll guess I’ll have to try writing the carbon rationing post another time.

*I’m a firm proponent of the ‘Lean, Green, Clean’ hierarchy of energy consumption. James’ technological innovations do have a place in the debate and would come under the clean and green categories, but his assertions that individuals should not have any personal responsibility for their own consumption is idiocy. Of course you have a responsibility for your own actions. By failing to reduce consumption in the first place, we have set ourself an even bigger technological challenge to face. Whilst I’m always up for a challenge, making it bigger than it needs to be seems daft to me – maybe I’m just being lazy?

**On this point, feel free to point any avid readers of Heat magazine towards Ecorazzi. You never know, reading about Brangelina’s latest escapades may have a bigger effect on the majority of the country than any targetted TV campaign…

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Proof that you can’t scare people into going green

September 26th, 2006

Condensed from the ESPRC press release:

New research published 25 September 2006 by the Economic and Social Research Council shows that positive, informative strategies which help people set specific environmental goals are far more effective when it comes to encouraging behaviour change than negatives strategies which employ messages of fear, guilt or regret.

Theories have long suggested that by changing attitude, social rules and peoples own ability to reach their goals, people’s intentions or decisions to act in a particular fashion will be changed, which in turn determines the extent of change in behaviour. But the supporting evidence for these widely accepted ideas was weak; there was a need to take a closer look at experiments that changed attitudes, norms and self-efficacy in order to measure the true extent of any changes in subsequent intentions and behaviour.

Research found the most effective strategies were to prompt practice, set specific goals, generate self-talk, agree a behavioural contract and prompt review of behavioural goals. The two least effective strategies involved arousing fear and causing people to regret if they acted in a particular fashion.  

I’m glad the academic world agree with me on this one ;o).

It reminds me of Seth Godin’s attempt to repackage ‘global warming’ as a more evil sounding problem.  Sorry, Seth – doesn’t look like that would work.

I’ve yet to go see Al Gore’s ‘Inconvenient Truth‘ – I’m hoping it’s not all doom and gloom.  I will report when I manage to see it. For readers in Leeds, it is showing at the Hyde Park Picture House from Friday 6 October until Thursday 18 October. Even if the film isn’t appealing – the cinema certainly is:

Originally built as a hotel in 1908 and converted to a cinema in 1914, The Hyde Park Picture House is a beautiful example of an Edwardian venue and one of the only surviving picture palaces in the UK.

As a grade 2 listed building, The Hyde Park still boasts many original features including gas lighting and a decorated Edwardian balcony.

With its classic facade and atmosphere, The Hyde Park Picture House has been through many changes in its long history. It is now home to a diverse mix of art house and mainstream films, backed up by screenings of classics, providing the most unique cinematic experience the city has to offer.

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