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Bio-ethanol From Sturdy and Once-Unwanted Indian Plant

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

With awareness of global warming at an all-time high – and governments seeking real-world solutions to solve this enormous problem – bioethanol fuel has risen up the agenda as a replacement for conventional fuel sources. At present, most bioethanol fuel is produced from either corn or sugar but a less known plant jatropha could be the real solution. Brazil has been a pioneer in producing bioethanol fuel from sugar, while the United States has focused on its substantial corn crop as a source, and both contribute more than half the world’s supply. Brazil alone made US $5.4 billion from biofuels (ethanol and biodiesel combined) in 2005, while global production is estimated at 48 billion litres (Biofuel Market Worldwide (2007-2010) www.canbiotech.com).

Global prices for crude oil, under pressure from a number of sources, are volatile and far above 1990s levels. This hurts the poorest countries most (Human Development Report 2005). Expensive fuel means the world’s poor are denied affordable access to machinery and appliances that can make life more comfortable. Poorer nations are often more dependent on oil imports than richer countries. As well, most of their industries are energy intensive, and their cars and homes are less energy efficient. This means low-income countries spend twice as much of their national income on imported oil than do developed countries (World Bank). A US $10 per barrel increase in the cost of crude oil shaves half a percentage point from economic growth in the West; in the poorest countries, it is nearly three times higher.

The two common sources of bioethanol fuel – corn and cane sugar – have a major drawback: they are diverting food sources into fuel for vehicles. Already, the massive US diversion of corn into the bioethanol fuel market has sent the price of corn skyrocketing, making this hardy food staple in countries like Mexico more expensive for the poor. Some estimates claim ethanol plants will burn up to half of the United States’ domestic corn supplies within a few years (Foreign Affairs). To fill the fuel tank of a sports utility vehicle (SUV) with pure ethanol requires 450 pounds of corn – enough calories to feed one person for a year.

And this is why many are now advocating a non-edible Indian fruit bush called jatropha as a better solution. It is like a grapefruit, with each fruit containing three plum-sized seeds. Each seed contains 35 percent oil which can be converted into biodiesel. A shrub from the family euphorbiaceae, jatropha’s lifespan is 50 years. It bears fruit several times a year, and each bunch is five to eight fruits. Being unedible, the oil is mostly used for soap and varnishes.

Cultivation of the jatropha was prioritised a year ago by the Indian Railway Minister, Lalu Prasad Yadav. Disused railways lands were to be put aside for growing the crop. Brazil’s biodiesel company, Biomasa, plans to plant two million hectares with jatropha this year, and it is believed jatropha will surpass sugar cane as the principal source for bioethanol in Brazil.

The advantages of jatropha include its hardy nature: it does not require pesticide, manure, or irrigation to grow and it is drought resistant. A single jatropha plant will yield one litre of biodiesel per year for 40 years, and it yields 1,300 kg of seeds per hectare per year. Its advocates hope to see jatropha bushes planted alongside existing crops, with an acre producing 100 litres of fuel per year.

The downsides of cultivating jatropha as a fuel source would need to be overcome. At present, jatropha’s high acidity means its seeds degrade quickly in humid environments (much of the global South) when exposed to air. Steel tanks used for storage require a nitrogen blanket to prevent water absorption. During the processing stage (something called transesterification), the large quantities of glycerine are produced as a byproduct. Demand is low for this byproduct and disposal is a problem. A cake is also produced that has no real value or use. To make it economically worthwhile to grow in India for example, farmers would need to receive four rupees per kg of seed. This would produce a biofuel costing 50 rupees per litre – considered too expensive at present. Jatropha advocates are urging government subsidies to kick-start production and make the price competitive.

In Ghana, smallholder farmers have already rebelled against growing jatropha. They say that since the oil is inedible, and growing the crop leaves them at the mercy of price-setting by the refineries, they do not want to run the risk.

“What may encourage farmers to venture into jatropha,” said Wisdom Yao Adjah-Cudjoe, a cereal farmers’ representative, “would be a guaranteed price arrangement, as is the case with cocoa.”

In Africa, research by the South African Biodiversity Institute has estimated that 50 percent of the landmass of the continent is suitable for jatropha cultivation (a total of 1,080 million hectares). It could be a huge opportunity for African farmers and a big cost saving for poor countries, but if farmers are to be encouraged to grow jatropha, they will need the right price incentives and guarantees.

Published: June 2007

Resources

  • Jain Irrigation Systems Ltd: An Indian company specialising in helping farmers to begin growing jatropha plants.
  • Centre for Jatropha Promotion: Based in Charu, Rajasthan, India, it researches all aspects of jatropha cultivation and acts as a seed bank.
  • Kick Start Oil Press: Developed in 1993, the Kick Start Oil Press was designed for use in Africa by farmers. It is manufactured in Kenya and sold as a complete kit for entrepreneurs to get started pressing seed for oil. The Kick Start NGO designs technologies for private entrepreneurs of small-scale enterprises, and has offices in Kenya, Tanzania and Mali.
  • Haiti Innovation: Established by former Peace Corps volunteers, and links Haitian NGOs with aid donors. It encourages projects to post on the web and contributors to donate directly to them. It is currently promoting the growing of jatropha in Haiti.
  • Agricultural Biotechnology Network in Africa (ABNETA): This is an excellent source for real-time news and information sources on the biofuel market in Africa.

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2022

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Fashion Recycling: How Southern Designers are Re-using and Making Money

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

With the rising awareness of the importance of doing fashion in an ethical and sustainable way, more and more fashion designers in the South are getting very creative. Fashion earns big money around the world: The global clothing industry is estimated to be worth US $900 billion a year.

In Paris, the Ethical Fashion Show, now in its fifth year, showcases fashion that respects people and the environment while still being glamorous, luxurious and trendy. It has attracted designers from around the world, including Mongolia, Thailand, China, Peru and Bolivia. The show demands that all participants adhere to International Labour Organization conventions – including banning forced and child labour – respect for the environment, creating local employment and working with craftspeople to ensure skills are retained and the fashion reflects the diversity of the world’s cultures.

In Abidjan, Ivory Coast, Felicite Mai is using pride in her nation’s top export commodity, cocoa (Ivory Coast is the world’s number one exporter of cocoa), to make smart fashion wear at affordable prices. She has turned the beige-coloured jute sacks used to ship cocoa beans around the world into clothes for men and women.

“Ivory Coast’s economy is based on agriculture, especially cocoa and coffee. So I decided to promote these crops by creating these fashion designs,” Mai, whose real name is Maimouna Camara Gomet, told the Reuters news agency.

“For me, it’s a way of drawing the whole world’s attention to cocoa and coffee,” she said

Mai comes from a family of cocoa planters and is a graduate of a sewing school. She works out of a studio-cum-shop in the Treichville suburb of Abidjan.

The clothes are usually beige, but some are dyed dark brown or blue. They include skirts, tops, trousers, shirts, waistcoats, caps, bags and accessories; she gets the sacks – most emblazoned with “Product of Ivory Coast, Cocoa” — from the city’s port warehouses. She cleans the jute cloth first, before creating the fashions.

“I had this idea from when I was still at sewing school in 1987. Then I opened my own workshop in 1996 and I first launched these kind of designs in 2003 during a fashion contest at Divo (in the south of Ivory Coast)” said Mai, who has several assistants at her shop.

She has been able to attract as clients local celebrities, artists and musicians and even a few from abroad.

In Brazil, it is footwear that is getting the recycled-look treatment. The brand Melissa specializes in plastic shoes that are eco-friendly and made from 100 percent recycled materials. They use a plastic called melflex made from recovered plastic. The shoes are made in injection molds and the factory is so efficient, it has next to no waste as a byproduct. It recycles all the waste and water used in the production process. And as a plus, they make a point of paying the workers well, and supporting social and environmental causes in Brazil.

Their secret to putting zing into recycled plastic shoes is to have high-profile, celebrity designers design some of the shoes. So far, they have had UK fashion mistress Vivienne Westwood, the Campana Brothers, and the UK-based, Iraqi-born architect Zaha Hadid. Hadid is a controversial figure who always stirs up debate, and her rubber shoes have brought attention to the brand.

The Chilean studio Modulab has turned to recycled rubber from the car industry to make bags. The rubber comes in sheets so it is easy to cut and shape into bags, thus reducing the amount of time and energy used to make the bags. The line is called RTA (ready to assemble) and includes three types of bags: an envelope, a handbag and a messenger bag. Each sheet of recycled rubber comes with the specific slots and pins for the consumer to put the bag together at home, without any glue or sewing involved. Energy used in the making of the entire bag is 100 percent human, except in the production of the material itself.

In Ghana, the cheeky Ghanaian businessman-cum-fashion designer Kwabena Osei Bonsu wanted to do something about the ubiquitous plastic bags that pollute the landscape of the capital, Accra.

In Accra, a small city of 2.2 million people, up to 60 tons of plastic packaging is dumped on the streets every day, a figure that has risen by 70 per cent over the past decade.

“I wanted to come up with an idea that would solve problems in my lifetime,” he said to the Independent.

He came up with the brilliantly simple solution of turning these wasted and damaging plastic bags back into usable and fashionable carryalls and handbags. He collects the plastic sacks and stitches them back together. The business, Trashy Bags, employs a dozen tailors and seamstresses. Launched in December last year, it so far has collected 10 million used plastic sachets from the streets, and sold more than 6,000 bags. Handbags go for US $7.79.

Ghana’s huge quantity of discarded plastic water bottles are gathered up for recycling too. A storage room overflows with more than 3 million sachets that have been collected and cleaned ready for recycling.

Bonsu’s business has turned into a source of income for local people, who receive US $3.89 for 1,000 sachets – a good return where the average yearly income is US $495

“I collect sachets because I am jobless and this gives me money,” said Hadiza Ishmael, a 55-year-old grandmother who has delivered 4,000 plastic bags. “It also makes the place look nicer.”

Published: August 2008

Resources

  • The Re: Fashion Awards show is a brand new fashion phenomenon, set to transform social and environmental standards in the fashion industry within a decade. The RE:Fashion Awards will take place in London in November 2008. The glittering event will see major faces from the fashion world come together to recognise the most significant development in the fashion industry of the 21st century. The deadline for budding fashion designers to enter their contest is August 20th.
    Website: http://www.refashionawards.org/
  • A photogallery of the cocoa fashions:
    here: Photogallery 1
    and here: Photogallery 2
    And a video of Mai making the garments here: Video
  • Ethical Fashion Show: Isabelle Quehe, who established the event, said “You almost never see designers from developing countries doing shows in Paris, so this brings together natural products, local fair labour, respect for the environment and finding sales outlets in Paris.” Potential designers and exhibitors can contact the Ethical Fashion Show by sending collection photos and a brief explanation on how the fashions contribute to the ethical fashion movement.
    Send contributions to: 4, rue Trousseau 75011 Paris
    Email: unilove@wanadoo.fr
  • Once inspired to get into the global fashion business, check out this business website for all the latest news, jobs and events.
    Website: http://us.fashionmag.com/news/index.php
  • A creative agency specialising in the promotion of African culture to the world. They organise RUNWAY AFRICA—Africa’s annual Fall Fashion Show featuring five of Africa’s most promising rising design stars on the runway.
    Website: http://inspirationafrica.org/aboutus.html
  • Green fashion must really be making an impact–the BBC, Britain’s venerable public broadcaster, has started an on-line fashion magazine. Called Thread. Fashion Without Victim, it is dedicated to bringing the “latest of eco-fabulous style”. Through a “unique mix of affordable fashion, exclusive videos, photo galleries and thought-provoking features” the site is committed to promoting all aspects of ethical fashion.
    Website: http://www.bbc.co.uk/thread/
  • Traidcraft fights poverty through trade, helping people in developing countries to transform their lives. Established in 1979 as a Christian response to poverty, we are the UK’s leading fair trade organisation.
    Website: http://www.traidcraftshop.co.uk/default.aspx

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator. 

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2022

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Innovation: Cairo’s Green Technology Pioneers

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

One thing is ubiquitous to every country, community and society: garbage. It’s a social and environmental problem, but far from being mere waste, rubbish has its uses. This by-product of the goods and foods consumed can also be a source of fuel. As such it has many advantages, including providing free fuel to cash-strapped households, independence from unreliable municipal services and a way to dispose of waste.

An enterprising Egyptian man is showing his community how it is possible to lower the cost of gas and hot water while also avoiding the service disruptions common with municipal utilities. In the process, he is pioneering a local green innovation model that can be replicated elsewhere.

Biogas (http://en.wikipedia.org/wiki/Biogas) generators — which can transform organic household waste into fuel — have been very successful in India and China. It is estimated there are 20 million small-scale urban biogas digesters in China and 2 million in India.

Hanna Fathy’s roof in the Manshiyet Nasser neighbourhood, home to the Coptic Christian Zabaleen community of Cairo – the city’s traditional garbage collectors and recyclers – is now a utility system, providing biogas and hot water.

The area is made of narrow streets and makeshift houses. Residents live cheek-by-jowl in a neighbourhood that is home to tens of thousands of people.

The community was badly hit when the 300,000 pigs the Christian residents have kept for the past 30 years to eat Cairo’s vegetative waste — an effective garbage-disposal system — were slaughtered under government orders to prevent the spread of swine flu (H1N1) (http://en.wikipedia.org/wiki/Swine_influenza).

One woman told U.S. National Public Radio about the hard life in the neighbourhood: “I’m working all the time. My hands get dirty, there’s no water. The price of food is too high. The gas has gone up to seven pounds (US $1.28) a bottle, so it’s expensive to heat.

“Everything is so expensive, and I have to live like this?” she said.

Fathy plops kitchen scraps, stale tea and tap water into a jug which he pours into a homemade biogas maker on the roof of his house. The stew of waste mixes with water and a small quantity of animal manure used to start the process, and overnight makes biogas, which is then used for cooking. The digester is able to provide an hour’s worth of cooking gas a day in winter months, and two hours in the summer, from around two kilograms of waste. The remaining waste by product becomes liquid organic fertilizer for the garden.

Fathy has been developing the biogas digester with the NGO Solar Cities (http://solarcities.blogspot.com), which provides designs, technical advice and support to Cairo citizens keen to embrace green technologies.

What is interesting is not only the technology but how that technology is being developed. The approach is to innovate and adapt the technology to local resources and skills. This increases the chances of take-up and buy-in.

The designs for the digesters and heaters have evolved through experimentation, brainstorming and availability of local materials.

Each biogas system costs about US $150 for materials, a cost that is being picked up right now by donations. Solar Cities believes there are only eight biogas digesters in Egypt so far, most built in 2009.

Solar Cities’ founder, Thomas Culhane, points out many urban dwellers do not believe they can generate biogas and associate it with rural systems that use animal manure. But the abundance of urban kitchen waste is in fact an excellent source material for biogas.

Culhane believes the biogas digesters are an excellent solution to two problems: the vast quantities of garbage piling up in Cairo, which has had its traditional disposal system disrupted by the slaughter of the pigs, and the city’s emissions of greenhouse gases that contribute to climate change.

Fathy has one goal: to be completely self-sufficient. He has been also prototyping a solar heater on his roof as well as the biogas digester. The solar water heater makes use of items that can be easily found: it recycles black garbage bags, has an aluminium frame and a glass cover. The whole thing rests on a Styrofoam block and uses copper tubes. The water is stored in a bright blue barrel.

Biogas, solar power and other forms of green energy face many obstacles if it is to expand further in Egypt. The average cost of each unit will need to come down to match the income of the users and compete with the government-subsidized energy sector.

Fathy has also found neighbours are skeptical and can’t believe biogas can be made this way.

Another man, Hussain Soliman, had both a solar water heater and biogas digester on the roof of his apartment building before the crumbling building collapsed.

The complete solar water heating system designed by Solar Cities can be assembled for under US $500. It uses two 200-litre recycled industrial shampoo barrels for the holding tank and back-up water supply. The solar panels need to be kept clean from dust every week, but other than that, Culhane insists the heaters require little maintenance.

Now in temporary government housing, Soliman is still enthusiastic about the technology and is re-building a solar heater and biogas digester for his new home.

“I’m planning to collect the organic waste from restaurants in the neighborhood to increase my gas output,” he told IPS News. “I’ll give the restaurants plastic bags and they can separate out the organics, and I’ll collect the bags at the end of each day.”

Published: January 2010

Resources

1) Practical Action has technical drawings and guidelines for making a small biogas digester. Website: http://practicalaction.org/practicalanswers/product_info.php?products_id=42

2)  The Anaerobic Digestion Community: Here is an excellent technical explanation of how a digester works, including a short film. Website: http://www.anaerobic-digestion.com/

3) China boasts a fast-growing biogas economy using farm waste. Here is a full summary of their experience. Website: http://www.i-sis.org.uk/BiogasChina.php.

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator. 

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2023

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A Solution to Stop Garbage Destroying Tourism

By David SouthDevelopment Challenges, South-South Solutions

SOUTH-SOUTH CASE STUDY

Tourism is an essential source of income for countries across the South. But many put that livelihood in jeopardy when they lose control of garbage collection. A popular tourist spot can represent a ‘paradise’ to visitors, but when it becomes too popular and local garbage collection systems collapse under the burden, ‘paradise’ can soon turn to an environmental hell.

The small, tourist-friendly Indonesian island of Bali (http://en.wikipedia.org/wiki/Bali) – known for its idyllic pleasures of spas, surf and serenity – is being overwhelmed by garbage. A survey of tourists found two-thirds would not return to the island because of the problem.

Tourism took off on the island in the 1970s. The economic benefits are clear: the island went from being economically marginal to ranking second only to the country’s capital, Jakarta, in wealth creation. The island received more than 2.38 million tourists in 2009, up 14.5 percent compared with 2008, according to Ida Komang Wisnu, head of the provincial statistics office. But tourism produces on average five kilograms of waste a day per tourist – 10 times what the average Indonesian produces (Bali Fokus).

In the past, the traditional way of serving food in Indonesia was to wrap it in, or serve it on, a palm leaf: a biodegradable approach. But with the huge expansion in use of plastics and non-biodegradable packaging, the waste disposal problem is out of control.

In Indonesia, government garbage disposal services tend to collect between 30 and 40 percent of solid waste, most of this from high income communities. The majority poor population are left to fend for themselves when it comes to waste disposal.

A solution by Yuyun Ismawati, an environmental engineer and consultant, has since 1996 focused on helping poor communities find ways to safely dispose of waste. In 2000, she started her own NGO – Bali Fokus (http://balifokus.asia/balifokus/) – and opened a waste management facility in the Bali village of Temesi. The recycling plant employs 40 people from the village, who sort garbage into recyclables, compost and residual waste. Income from the recycled waste and compost goes to helping local farmers.

She then expanded her concept to include households around Bali and elsewhere in Indonesia. She concentrated on housewives and targeted reducing the amount of household waste going to dump sites. A core team trains housewives in daily habits that separate waste and compost organic matter like vegetable and fruit scraps. Bali Fokus claims it has been able to reduce waste created by 50 percent in 500 homes. Some of the women sell their compost in local markets; recyclables are turned into sellable items.

From 2001 to 2003, Ismawati turned this approach into a replicable template called SANIMAS. By 2008, the SANIMAS template was being used in hundreds of communities across Indonesia.

Her solution to the deluge of tourist waste can be seen in the luxury Jimbaran Bay area of Bali. Traditionally, the area’s hotels would sell their waste to pig farmers. While the pigs feasted on the fancy scraps, the rest of the waste was put in plastic bags and thrown away in mangrove forests.

“I told hotels: Your job is to sell rooms, not to sell garbage,” Ismawati recalls. “We have to protect Bali or else tourists won’t want to come here anymore.”

Ismawati cleverly turned the relationship around: rather than a pig farmer paying for scraps, she convinced one of them there was money to be made recycling and sorting garbage. For this, the hotels would pay the farmer.

A network of 25 hotels now pays to have their garbage taken away and sorted by hand: an important source of full-time jobs.

The workers sort through paper, plastics, glass, aluminium, food scraps and vegetables. Each week, 140 trucks deliver waste to the facility. Only 10 leave with waste that has to go to a dump site.

Food leftovers are bought by local pig farmers and grass clippings and other organic matter is composted (http://www.recyclenow.com/home_composting/), and eventually makes its way back to the hotels and is distributed in the flower beds.

This system has created 400 jobs where the pig farmer once only employed 10 people.

“If you want a hi-tech solution in a developing country you will wait and wait and wait until you get the money, or big donors to fund it,” Ismawati told the Telegraph newspaper. “And even then it may not work.”

A graphic example of this is a donated waste recycling machine given by the local government. It can’t be used because the electricity to power it costs too much. Human labour is a cheaper option.

Bali Fokus’ successful approach has now been replicated in six other sites on the nearby island of Java. And the government of Indonesia has promised to help create 15 more each year.

In 2009 Ismawati won the Goldman Award (http://www.goldmanprize.org/), which honors grassroots environmental heroes from the six inhabited continental regions: Africa, Asia, Europe, Islands and Island Nations, North America, and South and Central America.

She is also working on using decentralized grassroots approaches to bringing sewage disposal and clean water to communities.

Published: March 2010

Resources

Development Challenges, South-South Solutions was launched as an e-newsletter in 2006 by UNDP’s South-South Cooperation Unit (now the United Nations Office for South-South Cooperation) based in New York, USA. It led on profiling the rise of the global South as an economic powerhouse and was one of the first regular publications to champion the global South’s innovators, entrepreneurs, and pioneers. It tracked the key trends that are now so profoundly reshaping how development is seen and done. This includes the rapid take-up of mobile phones and information technology in the global South (as profiled in the first issue of magazine Southern Innovator), the move to becoming a majority urban world, a growing global innovator culture, and the plethora of solutions being developed in the global South to tackle its problems and improve living conditions and boost human development. The success of the e-newsletter led to the launch of the magazine Southern Innovator.  

Creative Commons License

This work is licensed under a
Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 License.

ORCID iD: https://orcid.org/0000-0001-5311-1052.

© David South Consulting 2022