| Term | Definition | Last updated |
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| Global Warming Potential (GWP) | A measure of how much heat different greenhouse gases trap in the atmosphere relative to carbon… |
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| Globalisation | The increased and increasing interconnectedness of the world, including communities and… |
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| Greenhouse effect | The trapping of heat in the Earth’s atmosphere by greenhouse gases, through the absorption of… |
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| Greenhouse Gases (GHGs) | Gases which cause the greenhouse effect, such as carbon dioxide, methane, and water vapour. |
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| Greening | Making something more environmentally friendly. For example, planting trees in a city (urban… |
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| Greenspaces | Land in cities covered by vegetation, such as parks, allotments, and woods. Some include water… |
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| Gross Ecosystem Product (GEP) | The economic value provided by ecosystem services. |
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| Heat-related illnesses | A range of conditions caused by increased body temperature, due to exertion or environmental… |
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| Heatwaves | An extended period of uncharacteristic hot weather for a given place and time. |
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| Indigenous Knowledge (IK) | Wisdom accumulated and passed down over generations within a specific community. |
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| Intergovernmental Panel on Climate Change (IPCC) | A body of the United Nations (UN) tasked with providing governments worldwide with scientific… |
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| Just Transition | Moving to a sustainable, ‘green’ economy and world in a fair way, including ensuring job… |
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| Justice | Climate justice recognises that people who have historically contributed the least to climate… |
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| Kincentric ecology | Humans are viewed as part of an extended ecological family, being interconnected with nature and… |
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| Lived experience | The knowledge and wisdom gained from directly experiencing something. |
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| Livestock Revolution | The increasing demand for animal-sourced food in developing countries, driven by population… |
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| Marine heatwaves | Unusually high ocean temperatures for an extended period of time (even months-years). Marine… |
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| Mass extinction | A rapid, widespread reduction in biodiversity on Earth. Historically there have been five mass… |
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| Migrant health | The health needs of people who relocate their home. This can include people who are forced to… |
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| Mitigation | Limiting climate change through reducing carbon emissions and enhancing sinks. |
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| National Adaptation Plans (NAPs) | National government-led plans for how a country will adapt to climate change. |
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| Nationally Determined Contributions (NDCs) | Climate action plans outlining how a country will reduce their greenhouse gas emissions to help… |
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| Natural capital | The value of everything that comes from nature. |
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| Natural Climate Solutions (NCS) | Nature-based ways to mitigate climate change, including planting trees and conserving, managing… |
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| Nature-based Solutions (NbS) | Nature-based ways to mitigate climate change meanwhile providing additional benefits for human… |