Chemical pollution is a global threat that demands for global action, says Zhanyun Wang. An interface body similar to the IPCC could help bridge the gap between science and policy.
Chemicals are at the heart of our modern world. But the way the world deals with chemicals is highly inadequate. Over the last decades, the number and diversity of chemicals produced and traded have increased drastically, reaching several hundred thousands. More than a third of these substances lacks proper descriptions, and at least 3 percent of all chemicals have concerning hazardous properties.1
Among the "known" chemicals harmful to humans and the environment are toxic fluorine compounds called PFAS that keep our rain jackets waterproof but can cause cancer, pesticides that clear farmland of weeds and pests but contribute to large-scale insect decline, and metals from our waste digital devices and electric car batteries that pollute e-waste workers and nearby environments. Exposure to lead, for example, still causes nearly 1 million premature deaths around the world every year.2
Progress has been made, but not enough
Many developed countries have established regulatory frameworks to address the problem of toxic substances, but these frameworks need to be complemented by international efforts.
This is particularly critical for addressing issues that transcend borders, such as heavy metals, persistent organic pollutants, and plastic wastes. For example, Switzerland imports many products from all over the world; to ensure their safety, joint international action throughout the global supply chains is required.
However, for a large fraction of chemicals in use, substantial knowledge gaps hinder their sound management. Furthermore, for those chemicals that are known as problematic or where there is emerging evidence of concern, control measures are often limited. Experience shows that it usually takes long for the international community to react accordingly.
Only recently and after decades of wide use, the Swiss government has nominated UV-328, a common chemical additive to protect the plastics from UV light, for listing under the Stockholm Convention on Persistent Organic Pollutants for a global elimination.3
Strenghtening global governance
There are signs of a much-needed political commitment: Next week the environment ministers around the world will meet online to set the course for the United Nations Environment Programme (UNEP) in 2022-2025.4 Action on chemical pollution based on stronger links between the scientific community and policymakers shall become a key element of UNEP’s forthcoming work, next to climate change and biodiversity loss.
As researchers in environmental chemistry, we can only support this agenda. In a perspective in Science , together with colleagues from different disciplines and regions, we reviewed the current landscape of international science-policy interface on chemicals and waste - a cornerstone for informed policymaking.5 We found a highly fragmented interface that is limited in scope and impacts.
This stands in sharp contrast to the rapid increase and diversification of chemicals in use and waste, as well as the rapid generation of scientific findings on negative side effects.
Bridging the gap
We are convinced that an intergovernmental science-policy body for chemicals and waste could help tackle the global threat of chemical pollution, akin to the Intergovernmental Panel on Climate Change (IPCC) for climate change and the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Service (IPBES) for biodiversity loss.
A core function of this body would be to foster broader bi-directional exchange of information, providing authoritative scientific assessements for policymakers and informing scientists about policy-relevant questions. Also, a key characteristic must be the wide involvement of diverse natural and social scientists, including legal experts and economists. This could in turn help to raise overall awareness of and increase participation by the scientific community in the science-policy interface.
A call for international collaboration
A journey of a thousand miles begins with a single step. We call on governments and stakeholders around the world to take this necessary step towards a global sound management of chemicals and waste. We also encourage universities and other academic institutions to continuously support research and teaching on the various aspects of chemical pollution.6 This is crucial not only for new knowledge, but also for future generations of scientists, policymakers and entrepreuners capable to address this global threat.
Zhanyun Wang co-authored this post with Martin Scheringer .
1 Wang Z, Walker GW, Muir DCG, Nagatani-Yoshida K. 2020. Toward a global understanding of chemical pollution: a first comprehensive analysis of national and regional chemical inventories. Environmental Science & Technology 54(5), 2575-2584. DOI: 10.1021/acs.est.9b06379
2 The Lancet: Global Burden of Disease. GBD summaries
3 Food Packaging Forum: UV-328 qualifies for screening as POP
4 United Nations Environment Assembly of the United Nations Environment Programme. 2020. For people and planet: the United Nations Environment Programme strategy for 2022-2025 to tackle climate change, loss of nature and pollution.
5 Wang Z, Altenburger R, Backhaus T, Covaci A, Diamond ML, Grimalt JO, Lohmann R, Schäffer A, Scheringer M, Selin H, Soehl A, Suzuki N. 2021 We need a global science-policy body on chemicals and waste. Science 371(6531), abe9090
6 Scheringer M. 2017. Environmental chemistry and ecotoxicology: in greater demand than ever. Environmental Sciences Europe 39, 3. DOI: 10.1186/s12302-016-0101-x