Every day, the world’s population generates enough waste to fill about 14 large soccer stadiums from top to bottom, more than 3.5 million tonnes. That's a lot of trash, from plastic bottles that aren't going anywhere to food scraps and other perishable items decaying and building up greenhouse gases in landfills and trash dumps.
Management of organic waste is a major dilemma for developing countries. It generates unpleasant odors and helps rats, flies, bugs and mosquitoes multiply and spread diseases. As it decomposes, organic waste generates methane, a gas that contributes significantly to global warming. Last year Daniel Hoornweg, Perinaz Bhada-Tata and Chris Kennedy predicted in an article in the magazine Nature that the global rate of solid waste generation is expected to triple by 2100. This is bad news because if the investment for solid waste management in developing countries remains as low as it is today, the world is at risk of irreversible environmental deterioration.
Urbanization is the most powerful force shaping the planet today. This can be good news as urbanization is the best bet we have to meet our global poverty reduction targets. Cities generate our wealth, our culture, and our innovation. This is also bad news since cities generate the lion’s share of the world’s GHG emissions, and cities are responsible for most of the planet’s current decline in biodiversity. Cities also generate solid waste; lots of it and the amount is growing fast.
‘Peak waste’ – that point in time when all the waste from all the cities finally plateaus around the world, and then slowly starts to decline, is not on track to happen this century. Estimates are that it will peak at three-times today’s current waste generation rate. Peak waste is an excellent proxy for humanity’s cumulative global environmental impact; therefore we are on track to triple today’s overall global environmental impact. Our ‘assault on the planet’ will start to subside on the other side of peak waste. Therefore we must move peak waste forward and reduce its intensity when it finally does arrive.
At the 9th South Asia Economics Students' Meet on Green Growth, participants shared their vision about South Asian cities of the future. These are their innovative ideas.
The creation and expansion of urban centers has been a hallmark of the development process. As per capita incomes in South Asia have increased, urbanization has expanded from 18% in the early 1970’s to 30% in 2010. This will continue to expand as people are drawn to cities for the opportunities to realize their aspirations.
These large urban communities, however, provide significant challenges, such as a high density, pollution and traffic congestion, all of which reduces the quality of life for its residents. By designing cities with the environment in mind, we will be able to reduce energy use and limit waste. Green growth in the cities of the future will minimize the ecological footprint and improve living standards
What will it take to make this dream a reality?
Let’s talk trash, just for a few minutes. In the time it takes you to read this pithy blog, more than 14,000 tonnes of waste will be generated: that’s enough to fill the Pentagon in less than a day. More than 1.5 billion tonnes of trash will be generated this year alone. And if you’re inclined to read this blog again in 2025, the amount will have increased to 23,000 tonnes. The annual trash generated at that time will be more than 2.2 billion tonnes a year. That’s enough garbage to fill the Roman Coliseum 730 times, or a line of garbage trucks 900,000 km long, 23 times around the world. Last week’s release of What a Waste: A Global Review of Solid Waste Management summarizes the issue.
Our cities generate enormous amounts of waste, and they’re just getting started – volumes will likely to increase beyond 2100, and we should plan for about a peak volume, four times what we have today. In today’s dollars, annual waste management costs will eventually exceed $1 trillion, and this cost is almost entirely borne by cities (this amount, for example, eclipses any sort of financial contributions to deal with climate change now being discussed within UNFCCC negotiations). Clearly we have a problem. But why is this particularly relevant to the climate change community?
Hello Development Marketplace Community! I am writing to introduce myself. I am the manager for a Development Marketplace funded project called “Adding Value to Waste in the Cassava Processing-Goat Keeping Systems.” The project won funding in the 2008 Global competition. It is being implemented in Abeokuta Nigeria.
This entry is the kick-off for featured blog I will be submitting regularly every two weeks. I’ll be bringing to you updates on how the project is going: challenges, successes, bottlenecks and maybe even some unexpected turns and twists.
With urbanization in Sri Lanka expected to increase from 20% in 2000 to 60% in 2030, perpetual gridlock, polluted waterways, and smoggy skies could all be potential side effects. However, Managing Cities for Sri Lanka Green Growth, organized by the Urban Development Authority and attended by representatives from all major cities taught me some ways we may mitigate some of the negative effects and create a sustainable urban development through innovative locally driven initiatives.
The workshop introduced the Eco2Cities approach to urban development which looks at helping developing countries achieve ecological and economic sustainability in urban areas. Although all Sri Lankan cities currently face challenges related to poor urban planning, it was enriching to hear some successful and innovative initiatives carried out by certain communities that can be used as examples for others.
|Pig farmers in Nias pull a 'waste disappearing act' by converting manure into useable energy.|
The clean pig pen I saw was in the village of Tetehosi, Idanagawo sub-district owned by a farm group with the name Ternak Harapan Maju which means, “Farm Hopes to Progress.” The pen is managed by priest Sabar Markus Lase, not only because he knows about pig farming, but also because the pig pen is in the backyard of the church.
I'm getting a lot of satisfaction lately from this blog, and here is the very last example: in response to a rather light posting simply calling attention to an ingenious awareness campaign, I received this comment from reader S.Y.