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Green Planet

It is time to fix the broken nitrogen cycle

MD Staff

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From breathtaking advances in synthetic biology to pitfalls in climate adaptation, UN Environment’s latest Frontiers report, launched today, explores the biggest emerging environmental issues that will have profound effects on our society, economy and ecosystems, along with some exciting and novel solutions.

By scanning the technological and environmental horizons, the report identifies five major topics:
Synthetic biology, modern biotechnology that combines science and engineering to manufacture and modify genetic materials, living organisms and biological systems.
Ecological connectivity – the linking and bridging of fragmented habitats into a connected landscape to prevent species extinctions.
Permafrost peatlands the ground in the northern hemisphere that remains permanently frozen and holds approximately half of the world’s soil organic carbon, threatened by rising temperatures in the Arctic.
Nitrogen pollution – the disturbance of ecosystems, human health and economies by massively altering of the global nitrogen cycle through human activity.
Maladaptation to climate change – the unintended increases in climate-related damages or diminished welfare of sustainable adaptation efforts.

“The issues examined in Frontiers should serve as a reminder that, whenever we interfere with nature – whether at the global scale or the molecular level – we risk creating long-lasting impacts on our planetary home, “Joyce Musya, Acting Executive Director of UN Environment said in the foreword to the report. “But by acting with foresight and by working together, we can stay ahead of these issues and craft solutions that will serve us all, for generations to come.”

Synthetic Biology: Re-engineering the environment

The report lays out the opportunities and challenges that synthetic biology – or the reengineering of our natural biology – holds for our society, zeroing in on how the genetic manipulation of living organisms to acquire new functions that otherwise do not exist in nature can serve human needs.

CRISPR technology, which enables scientists to cut out a chosen DNA segment and replace it with an entirely new DNA strand, which can alter the characteristics of an organism. With this new DNA, the organism can be released into the wild to mate and expand the appearance of these modified genes in our environment. This might be used to render a species immune to certain diseases or to inhibit the reproduction of invasive species.

The strategies to release of genetically engineered organisms into the environment have raised valid concerns about the potential far-reaching impacts and unintended consequences. This requires multifaceted societal debate because of its power to modify, suppress or replace the entire population of the target species, bypassing the fundamental principles of evolution.

Ecological Connectivity: A bridge to preserving biodiversity

Large-scale industrialization has caused widespread fragmentation of natural landscapes around the globe. Habitats that were once continuous are now compartmentalized and isolated, causing a spiralling decline of some species as they can no longer disperse to find food or mates.

“A consequence of the segmentation of natural landscapes is that mammals and other species are moving less than half the distance they once did,” the report notes. “This limited ability to migrate, disperse, mate, feed and thrive means that wild animals are cornered into a situation where the threat of extinction looms larger.”

Permafrost Peatlands: Losing ground in a warming world

The Arctic is warming twice as fast as the global average and scientists are increasingly concerned at the accelerating rate of permafrost thaw. Permafrost is so expansive that it underlies 25% of the northern terrestrial hemisphere, and it holds titanic volumes of greenhouse gases locked in its peatlands – all which could potentially be released as the ground defrosts. 

Permafrost thaw not only has direct impacts on ecology and infrastructure in local regions, it could set in motion an uncontrollable snowball effect: as carbon is released from the thawing peat and heats the atmosphere, thus worsening climate change ad infinitum.

Research is underway, but at present, too little is known about the precise location of permafrost peatlands, how they’re changing, and what will happen to the atmosphere if they all would thaw.

The Nitrogen Fix: From nitrogen cycle pollution to nitrogen circular economy

Nitrogen is essential for life, and an extremely abundant element in the Earth’s atmosphere. In the form of the N2 molecule, nitrogen is harmless, making up 78 per cent of every breath we take.

Growing demand on the livestock, agriculture, transport, industry and energy sector has led to a sharp growth of the levels of reactive nitrogen – ammonia, nitrate, nitric oxide (NO), nitrous oxide (N2O) – in our ecosystems,

Excess nitrogen pollution has tremendous consequences on humans and the environment. In the form of nitrous oxide, for example, it is 300 times more powerful than carbon dioxide as a greenhouse gas, in addition to the effects of various nitrogen compounds on air quality and the ozone layer.

“Altogether, humans are producing a cocktail of reactive nitrogen that threatens health, climate and ecosystems, making nitrogen one of the most important pollution issues facing humanity,” the report warns. “Yet the scale of the problem remains largely unknown and unacknowledged outside scientific circles.”

Maladaptation to Climate Change: Avoiding pitfalls on the evolvability pathway

In a rapidly changing climate reality, strategies for adaptation need to increase human and ecosystem resilience on a global scale, while avoiding short-term fixes that may only have local benefits.

In its final chapter, the report explores the various ways in which adaptation can go wrong, from processes that do not work to adaptive actions that damage resources, narrow future options, compound the problem faced by vulnerable populations, or pass on responsibility for solutions to future generations.

It delves into the key discussions about what exactly constitutes maladaptation in relation to the objective of keeping global temperatures below 1.5°C and offers guidance on how to implement responsible adaptation strategies.

 “Evidence indicates that maladaptation can be avoided by evaluating all costs and benefits, including co-benefits, for all groups in society, and by being explicit about who the winners and losers will be, and how the burdens could be better shared.”

UN Environment

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Green Planet

UN Environment, Google, EC partnership effective to depoliticize water crisis in South Asia

Bilal Ahmad Pandow

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This year the theme for World Water Day 2019 is ‘Leaving no one behind’ and goes hand in hand with the Sustainable Development Goal (SDG)-six which is ‘water for all by 2030’. However, the ground reality in South Asia appears gloomy and too far to achieve the SDG-6 as the countries are still politicizing water crisis.

The women and children walk miles each day in search for water in Pakistan’s financial capital, Karachi. While, in India, according to a 2018 WaterAid report, about 163 million people in India lack access to clean water close to their home and 70 percent of the country’s water is contaminated. The situation in Bangladesh is no better, the demand for water in the Dhaka is 2.2 billion liters a day, while the production is 1.9 billion liters a day.

Besides, in Bhutan and Nepal, South Asia’s per capita water availability is already below the world average. The region could face widespread water scarcity— less than 1,000 cubic meters available per person.

Warning bells too have been sounded by Down To Earth, the magazine that Centre for Science and Environment, Bengaluru will see Cape Town-like water crisis in the not too distant future. As the number of waterbodies in Bengaluru has reduced by 79% due to unplanned urbanization and encroachment – while built-up are has increased from 8% in 1973 to 77% now.

Despite common concerns over the inevitable threat of water scarcity South Asian countries have found it difficult to collectively curate effective agreements over efficient water resource management within international river basins. The absence of guiding frameworks plagues hydro-diplomatic relationships of these countries. It is also being said that water will be one of the critical drivers of peace and stability in South Asia in the second decade of the 21st century.

Though there are some joint mechanisms like India-Pakistan Indus Waters Treaty of 1960.Both have repeatedly accused each other of violating the 1960s Indus Waters Treaty that ensures shared management of the six rivers crossing between the two neighbors, which have fought three major wars in the past 71 years.

Yet fast-growing populations and increasing demand for hydropower and irrigation in each country means the Indus is coming under intense pressure. Also, the NASA in one of its reports mentions that the Indus Basin aquifer of northwestern India and Pakistan is the second-most overstressed basin. Another one is between India-Bangladesh Ganges Water Sharing Treaty of 1996, long-standing and seemingly intractable regional disputes have put a strain on these agreements.

The EastWest Institute, researchers have suggested steps should be taken towards enabling effective hydro-political regimes to take root in South Asia and involved countries should endorse the United Nations Watercourses Convention (UNWC). This will ensure, sharing of transboundary hydrological data and water bodies would be managed through the Integrated River Basin Management process.

Besides, Hydro-diplomats have a role to play along with the multilateral institutions like the World Bank. Local and international NGOs also have a key role to play by bring all stakeholders of these countries together for cooperation on the Indus basin.

The recent partnership between the UN Environment, Google, and the European Commission, which aims to ‘leave no one behind’ on World Water Day, have launched a groundbreaking data platform that would track the world’s water bodies—and countries’ progress in achieving the Sustainable Development Goals. And this partnership could be of vital importance for South Asian countries to depoliticize the water crisis.

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Green Planet

I love the the Green New Deal but …

Dr. Arshad M. Khan

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Ever since out first ancestor lit a fire, humans have been pumping CO2 into the atmosphere.  Add to that the first herder because ruminants are another large emitter of greenhouse gas (GHG). 

Some people want to declare a national emergency and ban fossil fuels within ten years.  How?   I am for it and all ready to go.  But please tell me how.  Think of the quarter billion vehicles in the U.S. and the infrastructure supporting them; the myriad gas stations and repair shops and the people employed in them; the thousands of miles of domestic gas pipelines to homes using gas stoves and gas heating.  Think of the restructuring, the replacement, the energy required, the megatons of metal and other materials used and their production which all require one thing — energy.  And what about air travel and the shipping industry? 

What of the millions of jobs lost?  Think of the jobholders and their families.  Most of these workers cannot switch skills overnight.  These are not just the million and a half employed in the industry directly, but include gas company employees, your gas furnace repair and maintenance man, the people building furnaces, gas stoves, the auto repair infrastructure — electric motors of course are darned reliable and need attention only to brakes, tire rotation and battery coolant checks for the most part — and so on.   

When you offer this laundry list, the response is likely to be, “Well I didn’t mean that.”  In effect, it defines the problem with the Green New Deal:  It is remarkably short on the ‘whats’ and especially the ‘hows’.  Funny though I first searched for the Green New Deal at Representative Alexandria Ocasio-Cortez’s (whose courage I admire greatly) official web page and surprisingly found … well nothing.  Why not something practical like mandating solar collectors on new homes constructed?

So you want to suck the CO2 out of the air; you can.  It takes 300MW to 500MW of electrical energy per million tons annually.  To put it in perspective, we need to remove at least 20 billion tons (20,000 times more) each year to remove the minimum of a trillion tons expected to be emitted by the end of the century.  The 10 million megawatt electrical base  required for this is ten times the current total US electrical power grid of 1.2 million megawatts

You want to bring carbon emissions down to zero.  I am all for it even though our ancestor — the one who lit the coal fire — could not.  Just tell me how.  If you want to talk about carbon neutrality … now there’s an idea.  But “switching immediately away from fossil fuels” as I read from one advocate recently … I wish it was possible. 

The rest of the goals are equally laudable — in fact I have advocated many including the necessity for well-paying jobs, infrastructure spending, eating less meat, and even net-zero emissions.  The big question is ‘how’ against entrenched interests. 

In the meantime, would someone please electrify my local suburban train. The 1950s diesel-electric locomotives spew black smoke and the carriages were designed in the same era.  Worse still, the service is chronically late.  Electrification of rail lines and improving public transport in the U.S. should be job one.  But every activity — and change particularly — uses energy.

Author’s note:  This piece first appeared on counterpunch.org

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Green Planet

Seven ways to fix a warming planet

MD Staff

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Many people across the world, including schoolchildren, are demanding bolder action on climate change by governments, businesses and investors. There are tremendous opportunities here to “think beyond, solve different,” transform our economies, and change the way we live.

Climate change actions are key to sustainability, and part and parcel of globally agreed efforts in line with the Paris Climate Agreement and the Sustainable Development Goals.

Agriculture and food

According to UN Environment’s Emissions Gap Report 2018, food systems from production to consumption have the potential to mitigate up to 6.7 gigatons of CO2 equivalent, which is second only to the energy sector. We need a global food transformation in the next 12 years in which food waste is halved and diets and health are improved through decreased animal protein intake. We also need to incentivize climate-smart and sustainable agriculture and end the current unjust food situation in which over 820 million people are undernourished.

Buildings and cities

Responsible for some 70 per cent of energy use, buildings and construction account for 39 per cent of energy-related carbon dioxide emissions. Vast amounts of urban infrastructure are to be built in the coming 15 years as rural-urban migration accelerates. There are huge opportunities here to retrofit existing buildings, improve building standards, and rethink urban planning such as by providing incentives for mini-grid solutions. We also need to tackle human-induced methane, nitrous oxide and CF11 emissions, and find smarter solutions for cooling, heating and waste management.

Education

Educate girls: educated women have fewer and healthier children. Improve global access to, and education on, family planning. We need to focus on economic, social and political inclusion to leave no one behind. Education, skills, and awareness-building are essential ingredients for meaningful inclusion.

Energy

Invest in renewables and stop commissioning new coal-fired power plants. We need to redirect fossil fuel subsidies to incentivize large-scale investment and job creation in renewable energy. At the same time, we need energy efficiency standards for electric equipment (lighting, appliances, electric engines, transformers) and a transition towards efficiency-labelled electric equipment.

Energy finance

Help poor countries mitigate and adapt to climate change. According to UN Environment’s Emissions Gap Report 2018, renewable energy and energy efficiency projects in developing countries could significantly cut emissions by 2020 if industrialized nations made good on their pledge to mobilize US$100 billion a year of climate funding. While energy investment is flowing increasingly towards clean energy, it is not flowing at the rate necessary to achieve the Paris Agreement’s goals.

Forests and land use

Protect and restore tropical forests. Plant a trillion trees to boost carbon capture, with associated benefits for biodiversity, food security, livelihoods and rural economies. To do this we need to scale up investment to halve tropical deforestation by 2020, stop net deforestation by 2030 globally, and raise around US$50 billion per year to reach a target of 350 million hectares of forest and landscape restoration by 2030 in line with the Bonn Challenge. So far, 168 million hectares of restoration have been pledged by 47 countries. We should avoid any further conversion of peatlands into agricultural land and restore little-used, drained peatlands by rewetting them. We also need to plant more trees on agricultural land and pastures.

Transport

Transport is responsible for about one quarter of all energy-related CO2 emissions, and set to increase to one-third by 2050, growing faster than any other sector. With the right policies and incentives, significant emission reductions can be achieved. For this to happen, we need to put in place vehicle efficiency standards, incentives for zero-emission transportation and invest in non-motorized mobility. For example, the Indian government is prioritizing policies that are helping to shift freight transport from road to rail.

UN Environment

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