More and more evidence has accumulated which shows that changes in global and regional climate over the last 50 years are almost entirely due to human influence.
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Articles on Climate Explained
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For the past two and a half million years, Earth has experienced regular ice ages, but with carbon dioxide levels now over 400 parts per million, the next ice age is postponed for a very long time.
Planting any tree is more important than planting a particular tree when it comes to removing carbon dioxide from the atmosphere.
Carbon dioxide makes up less than one-twentieth of 1% of Earth's atmosphere. How does this relatively scarce gas control Earth's thermostat?
Regenerative agriculture has the potential to build production and reducing pollution, but it needs a clearer definition.
All plants take up carbon dioxide when they grow, but when they are harvested or cut down, they release the greenhouse gas back into the atmosphere.
Traditional market transactions ignore the costs of greenhouse gas emissions. An emissions trading scheme is a tool to put a price on emissions and to influence us to choose lower-emission options.
New Zealand is small and generates a tiny fraction of global greenhouse gas emissions, but investment in cutting emissions is important and could influence other, larger countries.
Plants live off carbon dioxide, but a higher level of the greenhouse gas in the air doesn't necessarily lead to more biomass production.
Do you have a question about climate change? This collaboration between The Conversation, Stuff and the New Zealand Science Media Centre gives you the chance to ask – and we'll provide expert answers.
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Associate Professor, Auckland University of Technology
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Director, African Climate and Development Initiative, University of Cape Town
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Senior Lecturer in environmental sustainability and public health and co-convenor of OraTaiao: NZ Climate & Health Council, University of Otago
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Policy Fellow, Climate Change, Motu Economic and Public Policy Research
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Professor of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill
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Professor and Chair in Lake and Freshwater Sciences, University of Waikato
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Professor, Physical Geography (climate science), Victoria University of Wellington
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Associate Professor , Director Environmental Studies, Victoria University of Wellington
