By Hon. Prof. Kariuki Muigua, OGW, PhD, C.Arb, FCIArb is a Professor of Environmental Law and Dispute Resolution at the University of Nairobi, Member of Permanent Court of Arbitration, Leading Environmental Law Scholar, Respected Sustainable Development Policy Advisor, Top Natural Resources Lawyer, Highly-Regarded Dispute Resolution Expert and Awardee of the Order of Grand Warrior (OGW) of Kenya by H.E. the President of Republic of Kenya. He is the Academic Champion of ADR 2024, the African ADR Practitioner of the Year 2022, the African Arbitrator of the Year 2022, ADR Practitioner of the Year in Kenya 2021, CIArb (Kenya) Lifetime Achievement Award 2021 and ADR Publisher of the Year 2021 and Author of the Kenya’s First ESG Book: Embracing Environmental Social and Governance (ESG) tenets for Sustainable Development” (Glenwood, Nairobi, July 2023) and Kenya’s First Two Climate Change Law Book: Combating Climate Change for Sustainability (Glenwood, Nairobi, October 2023), Achieving Climate Justice for Development (Glenwood, Nairobi, October 2023), Promoting Rule of Law for Sustainable Development (Glenwood, Nairobi, January 2024) and Actualizing the Right to a Clean and Healthy Environment (Glenwood, Nairobi, January 2024)*
According to UNEP, air pollution is responsible for nearly seven million deaths. In addition, pollution, through air, freshwater and ocean contamination, accumulates toxic chemicals in the food chain, harming humans and animals. Environmental pollution is therefore a threat to not only the Sustainable Development agenda but also to the very existence of the humankind. Air pollution is a key threat to Sustainable Development and good health and well-being of humanity and therefore addressing it is necessary for Sustainable Development and the good health and well-being of humanity.
Air pollution refers to the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere. The World Health Organization (WHO) defines air pollution as the contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere.
It has been noted that household combustion devices, motor vehicles, industrial facilities and forest fires are some of the common sources of air pollution. Further, according to UNEP, air pollution comes from many sources – from cookstoves and kerosene lamps to coal-fired power plants, vehicle emissions, industrial furnaces, wildfires, and sand and dust storms among others. It has been asserted that air pollution is the greatest environmental threat to public health globally and accounts for an estimated seven million premature deaths every year.
UNEP notes that air pollution is the most-pressing environmental health crisis of our time, responsible for an estimated seven million premature deaths every year. It further notes that approximately nine in ten people around the world breathe unclean air, which increases the risk of asthma, heart disease and lung cancer.
WHO notes that outdoor and indoor air pollution cause respiratory and other diseases and are important sources of morbidity and mortality. It further points out that the burden of disease attributable to air pollution is now estimated to be on a par with other major global health risks such as unhealthy diets and tobacco smoking.
Air pollution has also been identified as a risk factor for some noncommunicable diseases such as ischemic heart disease, stroke, chronic obstructive pulmonary disease, asthma and cancer. It is estimated that almost all of the global population (approximately ninety nine per cent) breathe air that exceeds WHO guideline limits and contains high levels of pollutants, with low- and middle-income countries suffering from the highest exposures.
Further, according to UNEP, most recorded air pollution-linked deaths occur in developing countries, where laws are weak or not applied, vehicle emission standards are less stringent and coal power stations more prevalent. Air pollution is therefore a major global concern especially in developing countries.
Air pollution is also linked to climate change. UNEP notes that air pollution is also fundamentally altering the climate, with profound impacts on the health of the planet. It has been correctly asserted that many of the drivers of air pollution (such as combustion of fossil fuels) are also sources of greenhouse gas emissions.
As a result, policies to reduce air pollution, therefore, offer a win-win strategy for both climate and health, lowering the burden of disease attributable to air pollution, as well as contributing to the near- and long-term mitigation of climate change. Abating air pollution is thus a vital tool in climate change mitigation.
Air pollution is thus an undesirable phenomenon that does not only damage human health, but also hampers the planet and the economy in many ways. Abating air pollution is therefore of utmost importance for the health of humanity and nature. WHO correctly takes the position that clean air is fundamental to health.
Further, it has been argued that clean air is a human right, and a necessary pre-condition for addressing climate change as well as achieving many Sustainable Development Goals (SDGs). Improving our air quality will bring health, development, and environmental benefits. The global nature of the challenge of air pollution calls for an enhanced global response in order to effectively abate the problem.
*This is an extract from Kenya’s First Clean and Healthy Environment Book: Actualizing the Right to a Clean and Healthy Environment (Glenwood, Nairobi, January 2024) by Hon. Prof. Kariuki Muigua, OGW, PhD, Professor of Environmental Law and Dispute Resolution, Senior Advocate of Kenya, Chartered Arbitrator, Kenya’s ADR Practitioner of the Year 2021 (Nairobi Legal Awards), ADR Lifetime Achievement Award 2021 (CIArb Kenya), African Arbitrator of the Year 2022, Africa ADR Practitioner of the Year 2022, Member of National Environment Tribunal (NET) Emeritus (2017 to 2023) and Member of Permanent Court of Arbitration nominated by Republic of Kenya and Academic Champion of ADR 2024. Prof. Kariuki Muigua is a foremost Environmental Law and Natural Resources Lawyer and Scholar, Sustainable Development Advocate and Conflict Management Expert in Kenya. Prof. Kariuki Muigua teaches Environmental Law and Dispute resolution at the University of Nairobi School of Law, The Center for Advanced Studies in Environmental Law and Policy (CASELAP) and Wangari Maathai Institute for Peace and Environmental Studies. He has published numerous books and articles on Environmental Law, Environmental Justice Conflict Management, Alternative Dispute Resolution and Sustainable Development. Prof. Muigua is also a Chartered Arbitrator, an Accredited Mediator, the Managing Partner of Kariuki Muigua & Co. Advocates and Africa Trustee Emeritus of the Chartered Institute of Arbitrators 2019-2022. Prof. Muigua is a 2023 recipient of President of the Republic of Kenya Order of Grand Warrior (OGW) Award for his service to the Nation as a Distinguished Expert, Academic and Scholar in Dispute Resolution and recognized among the top 5 leading lawyers and dispute resolution experts in Band 1 in Kenya by the Chambers Global Guide 2024 and was listed in the Inaugural THE LAWYER AFRICA Litigation Hall of Fame 2023 as one of the Top 50 Most Distinguished Litigation Lawyers in Kenya and the Top Arbitrator in Kenya in 2023.
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