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Your Home Planet Care

60: Carbon calculators

Problem:

Many people would like to reduce their greenhouse gas (GHG) emissions but have no easy way to measure them and guide their actions.

Solution:

Portable CO2 calculators


In 1996, William E. Rees and his PhD student Swiss-born Mathis Wackernagel at the University of British Columbia, Canada published their solution for calculating this in a book “Our Ecological Footprint”, now available in English, Chinese, French, German, Hungarian, Italian, Japanese, Latvian, and Spanish.

Wackernagel went on to set up a Global Footprint Network, an international sustainability think tank with offices in Oakland, California; Brussels, Belgium, and Geneva, Switzerland. The think-tank is a non-profit that focuses on developing and promoting metrics for sustainability.

For calculating personal carbon footprints, several online carbon footprint calculators are now available.

These websites ask you to answer more or less detailed questions about your diet, transportation choices, home size, shopping and recreational activities, usage of electricity, heating, and heavy appliances such as dryers and refrigerators, and so on. The website then estimates your carbon footprint based on your answers to these questions.

Here are just some:

Do you know of other carbon calculators? Use the Comments to let us know.

What you can do: Keep on checking your own carbon footprint. 

Discover Solution 61: Iceland’s carbon fix

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Your Home Planet Care

53: Planet-oriented board games

Problem:

The manufacturing of a board game is not environmentally friendly and it may only concentrate on abstract concepts such as “Sorry” or “Snakes and Ladders”.

Solution:

Board games that involve players in cleaning, repairing and protecting our Planet.


In 1996, following the success of his first board game Bioviva, Jean-Thierry Winstel of Montpellier, France decided to create a range of question-and-answer-themed educational games for family and children that would raise awareness of respect for nature in an eco-design approach.

They must be exclusively made in France, so reducing CO₂ emissions related to their shipment and linked to an eco-design approach i.e. paper, cardboard and FSC-labelled wood and plant-based inks, respectful of people and the environment.

This approach, unique in the publishing sector, allowed Bioviva to constantly improve its production methods and to reduce its ecological footprint ever more. The games are offered at attractive prices, in order to make them accessible to the greatest number.

One popular product is a board game called “Nature Challenges” where children Tomorrow’s the incredible diversity of animals and try to protect them on 5 continents. Added to their board and card games, Bioviva launched “Nature Challenges” books.

Bioviva has produced more than 2.5 million copies of “Nature Challenges”, translated into various languages and sold in 13 countries.

In February 2018, on the occasion of the 10th anniversary of the Nature Challenges card game Bioviva announced the launch of the Défis Nature club, a 12-page promotional magazine including gifts (cards, posters) and contests.

Alongside Bioviva, other games encourage players to focus on our Planet. “Earthopoly” is inspired by the “Monopoly” board which since 1935 has been translated into 47 languages, played in 114 countries and has sold more than 275 million copies.

To play Earthopoly, a player chooses their token (an object from nature) and starts at “Go Green.” Players increase their property value by collecting Carbon Credits and trading them in for Clean Air. But try to avoid getting sent to the Dump!

Like Bioviva’s “Nature Challenges”, not only is Earthopoly a game about the earth it is entirely eco-friendly itself as the game pieces are either made by nature or completely recyclable, the ink is vegetable oil-based, with the game box made from 100 % recycled Chip board.

All the paper is recyclable and is made with 10 % recycled pulp that comes from a mill that purchases pulp that is monitored by a responsible third party forest management group. Green Power was purchased for the electricity used to manufacture the paper for the box (renewable energy in the form of wind, hydro, and biogas).

While TDC Games produces “The Green Game” for 2 to 6 players, with its coasters growing actual wildflowers, Global Horizons Ltd. produces “Envirochallenge – The Ultimate Challenge for the last Endangered Species MAN.”

Ethica”, based on the principles behind the collaborative ethical investment group Reseau Financement Alternatif, lets up to 27 players assume the role of an investment banker or venture capitalist and see how well their green intentions stand up in the world of international finance.

Wildlife Web”, inspired by Pokémon card games, created by Montana-based author and educator Thomas J. Elpel, is a dynamic ecology strategy game that engages players to experience what life is such as for a red-tailed hawk or yellow-bellied marmot foraging for food, raising young and defending against predators. It gets players’ animals to cooperate or compete with one another.

What you can do: Acquire and play Planet-oriented board games at home.

Discover solution 55: how recycled bottles can make eco-cement

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Materials Planet Care Your Home

51 Bird protecting glass

Solution 50 in a 1-a-day series of 366 creative, hopeful ideas to clean up, repair, protect our planet:

Problem:

Billions of birds are killed annually following collision with the large panes of glass used in modern buildings.

Solution:

Bird protection glass with an ultraviolet-reflective coating. Birds can see the coating, but it is virtually invisible to humans.


In the late 1990s Dr. Alfred Meyerhuber, a German attorney with a personal interest in birds and science read an article in a magazine about orb weaver spiders and their use of stabilimenta. Orb weaver spiders, common worldwide, build their distinctive webs using strands of silk with UV reflective properties.

Meyerhuber was good friends with Hans-Joachim Arnold, the owner of Arnold Glas, a manufacturer of insulated glass products headquartered in Remshalden, Germany. As a young business owner, Arnold was motivated by technical and environmental challenges and looked for ways to set Arnold Glas apart from its competition.

When Meyerhuber brought the orb weaver spider’s strategy to his attention, Arnold was intrigued. Despite initial resistance by the board of directors, he convinced the company to undertake the necessary research and put his company to work developing a product that would have the same UV-reflecting qualities as spider silk.

Arnold Glas’s Head of Research and Development, Christian Irmscher, led the technical product development of ORNiLUX. The coating was developed together with technicians at Arnold Glas’s sister company, Arcon, located in Feuchtwangen, Germany, which specializes in thin low-e and solar coatings for architectural glass.

The companies tested many different coating types and patterns. The researchers found that a patterned coating (versus a solid coating) made the contrast of the glazing more intense: the coated parts reflected UV light while the interlayer sandwiched between two layers of glass absorbed the UV light. The two functions together enhanced the reflective effect.

Although the specific pattern of a spider’s web inspired the solution, Irmscher and his team had to design a unique pattern for the window coating in order to make the application process practical.

After patenting the transparent UV coating in 2001, Arnold Glas introduced ORNiLUX SB1 Bird Protection Glass, its first commercial product using the technology, in 2006. The vertical lines of UV-reflective coating used in this product were sometimes perceptible but very subtle and not visually distracting.

Three years later, the company introduced an improved second-generation product, ORNiLUX Mikado. The name refers to the crisscrossed UV pattern of the design and comes from the German name for the game of pick-up sticks.

The new pattern and improved coating of Mikado is nearly invisible to the human eye. Independent pre-market testing by the Max Planck Institute for Ornithology in Radolfzell, Germany, demonstrated that ORNiLUX windows are highly effective at protecting against bird strikes.

The first project in the USA to use ORNiLUX was at the Center for Global Conservation at the Bronx Zoo and was completed in 2009. The architects specified ORNiLUX SB1 for the entire building, but in the end it was used in only a corner conference room that had the biggest risk of bird strikes.

An ongoing monitoring program has noted a dramatic difference between the portions of the building with and without the bird-safe glass.

A year later, Munich’s Hellebrunn Zoo used ORNiLUX Mikado in the design for a new outdoor polar bear exhibit. Due to the zoo’s location near the Isarauen Nature Reserve, which harbours many wild kingfishers, bird collisions were a significant concern.

The zoo had other outdoor glass enclosures with a history of bird strikes, and previous attempts to use hawk silhouettes and bamboo plantings to protect the birds had failed.

ORNiLUX Mikado was used for the polar bear enclosure and pelican house. Zoo officials were pleased to find a solution that did not block visitors’ views of the animals and noted in the first months after it was installed that no birds had collided with the glass.

Ongoing testing of existing and new configurations continues with American Bird Conservancy’s Flight Tunnel Test Facility located at the Carnegie Museum Powdermill Nature Reserve in Rector, PA.  Additional tests are conducted with a flight tunnel facility in Rybachy, Russia.

At the American Institute of Architects Expo in June 2019, Arnold Glas debuted new oversize production capabilities for its bird-safety glass, ORNILUX. It is now offered in a maximum size of 126 x 472 in (320 x 1200 cm).

What you can do: Tell local architects and builders about Ornilux.

Discover Solution 52: How to stop birds crashing into solar panels

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Materials Your Home

39: Biodegradable plastics from shrimp, manure and more

Problem:

There is too much plastic in the world that takes too long to break down.

Solution:

A compostable plastic that dissolves instantly in hot water and breaks down over a period of months on land or at sea.


In Indonesia, Kevin Kumala has taken a local and cheap root vegetable called the Cassava and combined its starch with vegetable oil and organic resins to make a compostable plastic.

The inventor claims it leaves no trace of toxic residue, which he demonstrates by drinking the dissolved plastic.

In 2014 Kumala founded Avani Eco, further innovating a material made from corn soy and sunflower seeds with which he has made ponchos. The strength of Avani Eco’s bioplastic is comparable to that of petrochemical-based plastic.

Fungus

Javier Gomez Fernandez, assistant professor and a team at the Singapore University of Technology and Design (SUTD), researching into biodegradable building options investigated a fungus-like class of eukaryotes known as oomycetes.

Their structures combine cellulose with the second-most abundant polymer on the planet: chitin, an artificial polymer made from chitin, a fibrous substance which is extracted from shells of crustaceans such as shrimps.

Shrimps

Chitin is biodegradable polymer that is antimicrobial, antibacterial, and biocompatible.

Inspired by this newly studied species of oomycetes, a team at  Singapore Univeristy of Technology and Design mixed small amounts of chitin with cellulose in an industrial dough mixer to create an organic, biodegradable composite they call Fungus-Like Additive Material (FLAM).

FLAM can be 3D-printed or cast, as well as manufactured using common woodworking techniques (e.g. sawing, drilling, polishing…) and also combinations of them. (www.epd.sutd.edu.sg

Researchers at Harvard University’s Wyss Institute have developed a material called Shrilk, an artificial insect cuticle made from chitin (a polysaccharide) and fibroin (a protein from silk).

Simply mixed together, the materials have mechanical properties that reflect the average of each material and are two times stronger than the stronger component. Shrilk could one day be used to suture wounds, and serve as scaffolding for tissue regeneration. (www.wyss.harvard.edu

Although shrimp shells are part of the waste problem in Egypt, in collaboration with the Nile University in Egypt, bioengineers at the University of Nottingham engineered chitin into biodegradable shopping bags, as well as new food packaging material to extend product shelf life.

Other materials are being developed. Scientists from the Centre for Sustainable Chemical Technologies at the University of Bath have developed a renewable plastic from a chemical called pinene found in pine needles.

Manure

In the Netherlands, Jalila Essaïdi and her team have found a way to turn manure into a bioplastic they called Mestic, which derives from the Dutch word for manure (‘mest’).

Essaïdi was approached by the agricultural sector of the Dutch province Noord-Brabant to help find a way to deal with the surplus of the manure. An annual report in 2016 showed that a total of 190,600 tons (172,900 tonnes) of phosphate was produced in the Netherlands, of which 99.7 million kg. originates from cow manure. www.jalilaessaidi.com

Discover solution 40: Disposable cups made from gourds, avocados and others

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Materials Your Home

38: Biodegradable bottles

Problem:

Humans produce almost 20,000 plastic bottles every second, according to a report by The Guardian, while a study by Oceana.org  finds that as many as 34 billion plastic bottles per year end up in the ocean.

Solution:

Biodegradable plastics made of corn and other plants.


In 1989, Pat Gruber working for commodity grain processor Cargill Inc., set out to turn corn into plastic. Gruber ascertained that if he fermented corn sugar with the right lactic bacteria and distilled it, this might be a route to a commercially viable biodegradable plastic.

By 1994, Gruber had progressed to a test factory to learn how to adjust the process to change the performance of the polymer for different applications.

That was enough to persuade Dow Chemical Co. to collaborate as a partner.

In December 1997, two years and one month after Cargill Dow was officially established, work began on building a US$3 million plant in Blair, Nebraska to produce NatureWorks PLA (poly lactic acid) polymer.

The plant was up and running by early 2002, with the capacity to produce an annual 154,000 tons (140,000 tonnes) of NatureWorks PLA made from 40,000 bushels of locally grown corn per day.

Gruber’s polymer was soon being used for making items such as bottles. In 2002, a manufacturing facility in Blair, Nebraska began operations.

It is the world’s first and largest PLA facility and it supplies NatureWorks’ Ingeo biopolymer. The Blair facility increased its Ingeo nameplate capacity and in 2013 NatureWorks sold 1 billion lb (454,000 kg) of Ingeo. www.natureworksllc.com

In 2009 Coca-Cola invested millions of dollars in creating its PlantBottle™, which uses PET plastic that is combined with up to 30 % of plant-based material made from sugar cane juice and/or molasses.

The company sought verification from third-parties such as Imperial College, London, where a biologist performed a life-cycle analysis of the bottle and reported that the packaging reduced the CO₂ impact by 12% to 19%.

A Michigan State University professor also confirmed PlantBottle’s green benefits. Coca-Cola has since distributed more than 15 billion of the breakthrough bottles in 25 countries, including parts of the U.S., Canada, Japan, Brazil, Mexico, Norway, Sweden Denmark and Chile. This saved 347,000 tons (315,000 tonnes) of CO₂ between 2009 and 2015.

In 2011, Coca-Cola took the first step in this collaborative innovation approach by licensing PlantBottle technology to H.J. Heinz for use in its ketchup bottles.

More than 200 million 20 oz (500 gm) packages, which feature “talking labels” asking “Guess what my bottle is made of?” reached store shelves and foodservice counters in the U.S. and Canada.

The next generation of plant-based PET packaging – or PlantBottle 2.0 – began in December 2011, when Coca-Cola invested in three leading biotech companies, Virent, Gevo and Avantium, to speed the commercialization of a PET plastic bottle made entirely from plants.

That year the company did launch a 100% plant-based bottle using a different drop-in plastic. It introduced a single-use bottle made from 100% bio-based high-density polyethylene for its Odwalla juice. The material was sourced from Brazil-based chemicals and plastics company Braskem.

In June 2012, Coca-Cola also teamed up with Ford, Heinz, Nike and Procter & Gamble to form the Plant PET Technology Collaborative.

Together, these brands have been working together to pursue a 100% renewable polyester plastic solution made entirely from plants for use in everything from clothing and footwear, to automotive fabric and packaging.

Coke is partnering with The World Wildlife Fund (WWF) to create guiding principles for sourcing agricultural feedstocks used in PlantBottle packaging.

In 2015, at the Expo Milano World’s Fair, Coca-Cola showcased the world’s first demonstration-scale PET plastic bottle made entirely from plant-based materials. The bottles used BioFormPX paraxylene produced by Coca-Cola partner Virent.

By 2018 PlantBottle technology had been used in more than 60 billion packages worldwide, although Coca-Cola was accused of “greenwashing” by a Danish local environmental group called Forests of the World who claimed that the company’s marketing of PlantBottle was exaggerated and misleading.

In July 2019 the Company committed to reducing the carbon footprint of “the drink in your hand” by 25% by 2020, compared to 2010 levels.

This includes the first-ever goal targeting for the entire Coca-Cola end-to-end value chain, cutting CO₂ across its manufacturing processes, packaging formats, delivery fleet, refrigeration equipment and ingredient sourcing.

Coca-Cola has calculated that this will directly and indirectly prevent the release of 220 million tons (20 million tonnes) of CO₂ into the atmosphere.

Tomorrow’s solution: Shrilk

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Mobility Human Effort Materials Your Home

33: Muzzicycles

Problem:

Bicycles are the most energy efficient form of transportation in the world, but the manufacturing of metal frames and components is energy and carbon intensive.

Solution:

The Muzzicycle. A bicycle made of recycled plastic to replace at least some of the 2 billion in the world that are made of steel and  aluminium.


In 1998, Juan Muzzi, a Uruguayan artist and mechanical engineer living in Sao Paulo, Brazil began research into PET and nylon materials including plastic bottles, shampoo containers, car dashboards and kitchen trash cans as a source of raw material, to make a plastic bicycle. It would not rust, be sturdier, more flexible and cheaper.

By 2008, Muzzi had found a way to integrate his molded frames with wheels, mudguards, pedals and seats, but it took four further years of testing to market the product to secure the seal of quality from INMETRO (Brazil’s National Institute of Metrology, Standardization and Industrial Quality).

By then a plant had been built which could take in 17,000 tons (15,400 tonnes) of recycled plastic every year using it to produce 10,000 Muzzicycles per month in every colour of the rainbow.

With 200 plastic bottles going into each frame, the process uses far less energy than is required for making traditional metal frames, saving well over 5 tons (4.5 tonnes) of CO₂ emissions, although a steel bicycle frame will lasdt a lifetime.

In 2020, Do Bem, manufacturer of fruit juice made a promise to remove from the environment 100% of the amount of long-life cartons that it produces per year, approximately 44 million.

This has included the donation of 20 Muzzicycles to four ngos in Rio de Janeiro: “Champion Hug”, “Maré Development Network”, “Irmãos Kennedy Community Center” and “Yes, I am from the Middle”.

Additionally, while working with Teto and Ecolar, the polyaluminium used to line Do Bem’s fruit juice cartons would be recycled into glasses, tiles and floors – the last two items will be used in the construction of sustainable housing organizations.

The production of a tile, for example, takes 500 boxes. Each house has 20 square meters and is made with 63 sheets and 16 recycled tiles, which requires about 40,000 cartons

In 2012 after discovering the Muzzicycle, Juan Carlos Seguro of Medellin, Colombia set up Eco Muévete Seguro making and marketing his bikes as Re-ciclas, or Re-cycles. Seguro then partnered with a local recycling firm, Kaptar, which operates a network of bottle collecting machines that link to smartphone applications.

Bottle collectors, by depositing bottles in the machine, earn points that can be spent on benefits such as subway tokens and movie passes. Kaptar’s machines take in 2,000 polyethylene terephthalate (PET) bottles every day.

Now there is a waiting list of at least 2,500 people to buy a recycled frame bike that is custom made in Sao Paulo. Juan Muzzi is now planning to manufacture recycled child’s bikes and plastic wheelchairs.

Discover solution 34: the billion tree tsunami

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Human Effort Materials Your Home

32: Bread into beer

Problem:

44% in bakeries, delicatessens and supermarkets. When it is deemed stale and can’t be sold it is simply thrown away.

Solution:

Turn uneaten, ready-to-be-thrown-into-the-dumpster bread into ‘can-I-please-have-a-pint’ craft beer.


Tristam Stuart, the founder of Feedback based in London, England campaigns against food waste.

In December 2009, he launched a food waste campaign by organising “Feeding the 5000” in London’s Trafalgar Square in which 5,000 people were served free curry, smoothies and fresh groceries from cast off vegetables and other food that otherwise would have been wasted.

Tristam heard about a brewery in Belgium which uses discarded bread to make craft ale. There is nothing new about this process. Kvass (from rye bread) although typically not strongly alcoholic has been around in Russia, Ukraine etc. for at least 5 centuries.

After refining the recipe with Hackney Brewery in London, Stuart then contracted with Hambleton Ales in North Yorkshire to produce it in quantities.

In 2016, Tristam began selling Toast Ale at London restaurants, online and through a growing number of distributors. Using roughly one slice per ½ UK pint (284 ml) bottle, his team of three recycled 3.6 tons (3.3 tonnes) of bread in the first 15 months.

The beer is made when surplus bread is sliced and mashed to make breadcrumbs, then toasted and brewed with malted barley, hops and yeast to make a quality pale ale with a distinctive taste of caramel notes that balance the bitter hops, giving a malty taste similar to amber ales.

All profits go straight to Feedback. Toast Ale subsequently expanded nationally in the UK, and internationally to the USA, South Africa, Brazil, Iceland and Sweden.

It also open-sources a recipe for homebrewers. The company has received global press coverage and won 11 industry awards, while Tristam Stuart was named at the World Economic Forum in Davos as one of 30 leaders to inspire ambition and mobilise action to reduce food loss and waste globally. Cans of Toast Ale bear the slogan “Here’s to Change” and describes the contents as among other terms “tropical” and “zesty”, “planet-saving. ” (toastale.com)

Discover solution 33: the Muzzicycle

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Planet Care Your Home

7: Perfect Sense • a wearable air quality sensor

Problem:

Some routes taken by schoolchildren to and from their schools are more polluted than others.

Solution:

In April 2020, Ava Garside, 13-years’ old, in Year 9 at the Allerton Grange School, Leeds, England created a graphene-based, wearable air quality pin-badge sensor which collects data and detects the air quality of wherever you are, helping to detect the cleanest and healthiest routes to work or school.

For her “Perfect Sense solution”, Ava was named the Junior winner of the Youth Industrial Strategy Competition, a national STEM – Science, Technology, Engineering and Maths (STEM) initiative coordinated by the government of the United Kingdom and the British Science Association.

She was also awarded the UK Space Agency SatelLife competition. She has since been working alongside scientists at the University of Manchester to develop the prototype further, but like many of the solutions presented on this website, the COVID-19 pandemic has slowed things up.

Discover solution 8: aircraft that generate electricity.

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Carbon Capture Materials Your Home

6: Kaalink • printer ink from car exhausts

Problem:

Fossil-fuel gasoline automobile exhausts pollute and damage health in crowded cities.

Solution:

A machine called Kaalink for recycling their soot to generate ink for printers, has been invented by Anirudh Sharma of India. Between 2013 and 2015 Sharma co-led activities at the Massachusetts Institute of Technology’s Media Lab India Initiative consortium to help shape self-organized, design-led innovation in India.

During a visit to his Indian home in 2013, Sharma noticed that his friend’s clothing was stained by air pollution. After experimenting for more than a year to see whether pollution rejected by vehicles was a resource recycling idea, Sharma realised that his invention would not help India if he set up office in the US.

So, in 2013 he returned to India and, along with three researcher friends, co-founded Graviky Labs in Bengaluru. Initially when they were experimenting with a new technology, there was no set guidance available in the market.

They conducted several experiments to understand the optimum technique for harvesting pollution from fossil fuel combustion sources. By 2016, the team started to retrofit Kaalink machines to car engine exhaust pipes in Bengaluru.

They were able to capture approximately 95 % or 1.6 kg of the particulate matter pollution without inducing back-pressure. Kaalinks were manually and individually installed by drivers, and after about two weeks of city driving were traded in at a Graviky Labs.

The machines could also be fitted to motorboats and to chimneys.

Graviky then set about converting the captured raw material into a black ink they called Air-Ink. An ounce of ink (28 gm) is produced by about 45 minutes of exhaust. Sharma and his team then built a prototype to test their ink’s printability.

They assembled a Nicolas’ ink shield with Arduino interfaced with their soot-catcher pump design. This shield allowed them to connect a HP C6602 inkjet cartridge to their Arduino2015 turning it into a 96dpi print platform.

It only used 5 pins which could be jumper-selected to avoid other shields. For the project they had to widen the holes of the cartridge to let the ink out, since the size of the particles in Air-Ink is much larger than the fine industrial ink.

Conventional black ink is one of the most consumed products in the industry. Most of this printing ink is produced in factories with complex chemical procedures.

Companies such as HP/Canon make 70 % of their profits by selling these cartridges at 400% margin. Air-Ink presented a far more economic option.

In August 2016, Graviky Labs, in partnership with Tiger Beer, Heineken Global, next linked up with international artists to spread the message of environment conservation.

They collaborated with seven Hong Kong-based artists for this project, providing approximately 42 gallons (150 liters) of Air-Ink in graffiti cans.

These worked well and were used in Hong Kong’s Sheung Wan district for street art activation to campaign against air pollution.

They captured this moment on a video that went viral and garnered 2.5 million views within 10 days. Sharma next travelled to smog-choked cities around the world and challenged 19 street artists to create billboards and murals in Air-Ink illustrating the effects of carbon waste, starting in London, going on to Berlin, Chicago, Sydney, Singapore and Amsterdam.

Street artist Buff Monster created a beautiful black-and-white drawing on a Manhattan sidewalk titled “This art is painted with air pollution.”

Anirudh’s innovation also gained recognition from Shah Rukh Khan, an Indian actor, film producer and television personality. Referred to in the media as the “King of Bollywood” and “King Khan”, he has appeared in more than 80 Bollywood films. Khan pledged to use Air-Ink for his brand promotions.

This included 4 handmade posters of Khan posted across New Delhi and Mumbai advertising the launch of Sharma’s TED-Talks in India “Painted with Pollution.” With corporate and government partnerships, Graviky hopes to install 1,000 capture units in every constituency.

In 2019, Graviky Labs proudly made this post on their website: “(422 billion gallons (1.6 trillion liters) of air cleaned so far.”

Discover solution 7: a wearable badge that helps you figure out the cleanest and healthiest routes to work or school.

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Materials Your Home

2: Ahimsa Silk • Peace Silk made without killing silkworms

Problem:

To make one pound of silk involves killing about 2,500 or more silkworms. 30,000-50,000 silkworms are killed to make one six-yard  (5.5 m) saree.

The Bombyx mori moths, having fed on mulberry leaves until they grow to 3 in (7 cm) (ten thousand times their original size) are then ready to be harvested.

The worms are boiled or blasted with steam by manufacturers to collect the cocoons, and this process kills the pupae.

Solution:

In the early 1990s, Kusuma Rajaiah was working in Andhra Pradesh’s handloom department when ex-president of India R Venkatarman’s wife, Janaki, who was on a state visit to the silk manufacturing facilities, asked Rajaiah if silk could be made without killing the worms.

Having studied fibers and filaments at The Indian Institute of Handloom Technology for three years, Rajaiah, a firm believer in Mahatma Gandhi’s principles of non-violence, found a solution enabling the silkworm to emerge out of the cocoon naturally and come out from their metamorphosis and live their fullest life peacefully.

From the pierced cocoons the required yarn is extracted and spun into a fiber for making a fabric which has the same luxurious feel of silk, with a slightly ‘raw’ appearance.

In contrast, the less humane process takes about 15 minutes. The damaged cocoons yield six times less filament, too, doubling the price of conventional silk.

Having created his first sample sarees, Rajaiah commercialised his innovation as Ahimsa Silk or Peace Silk. (Ahiṃsā  Sanskrit: अहिंसा is an ancient Indian principle of nonviolence which applies to all living beings)

The government of India granted Rajaiah a 20-year patent in 2002 and trade marks for Ahimsa silk in 2006. It has since been used in designer collections showcased all over the world.

The innovative entrepreneur has also been able to make jersey out of Ahimsa silk, which they now use to make T-shirts and lingerie. Based on Rajaiah’s solution, Prayaag Barooah of FabricPlus, a weaving initiative in Guwahati, Assam, works with about 100,000 rural silk farmers and weavers to manufacturer ahimsa silk. With COVID-19, FabricPlus transitioned to making silk masks.

Discover solution 3: a battery that literally breathes, exhaling oxygen.

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