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      Students’ conceptions of keeping fattening pigs and dairy cows: an exploratory interview study with elementary school students in North-West Germany

      1 , 1
      Journal of Biological Education
      Informa UK Limited

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          Planetary boundaries: Guiding human development on a changing planet

          The planetary boundaries framework defines a safe operating space for humanity based on the intrinsic biophysical processes that regulate the stability of the Earth system. Here, we revise and update the planetary boundary framework, with a focus on the underpinning biophysical science, based on targeted input from expert research communities and on more general scientific advances over the past 5 years. Several of the boundaries now have a two-tier approach, reflecting the importance of cross-scale interactions and the regional-level heterogeneity of the processes that underpin the boundaries. Two core boundaries—climate change and biosphere integrity—have been identified, each of which has the potential on its own to drive the Earth system into a new state should they be substantially and persistently transgressed.
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            Accommodation of a scientific conception: Toward a theory of conceptual change

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              Climate Change and Food Systems

              Food systems contribute 19%–29% of global anthropogenic greenhouse gas (GHG) emissions, releasing 9,800–16,900 megatonnes of carbon dioxide equivalent (MtCO2e) in 2008. Agricultural production, including indirect emissions associated with land-cover change, contributes 80%–86% of total food system emissions, with significant regional variation. The impacts of global climate change on food systems are expected to be widespread, complex, geographically and temporally variable, and profoundly influenced by socioeconomic conditions. Historical statistical studies and integrated assessment models provide evidence that climate change will affect agricultural yields and earnings, food prices, reliability of delivery, food quality, and, notably, food safety. Low-income producers and consumers of food will be more vulnerable to climate change owing to their comparatively limited ability to invest in adaptive institutions and technologies under increasing climatic risks. Some synergies among food security, adaptation, and mitigation are feasible. But promising interventions, such as agricultural intensification or reductions in waste, will require careful management to distribute costs and benefits effectively.
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                Author and article information

                Contributors
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                Journal
                Journal of Biological Education
                Journal of Biological Education
                Informa UK Limited
                0021-9266
                2157-6009
                August 31 2022
                : 1-31
                Affiliations
                [1 ]Department of Biology Didactics, Osnabrück University, Osnabrück, Germany
                Article
                10.1080/00219266.2022.2108104
                3493fa1f-e090-4884-8901-a86cc64eb03a
                © 2022
                History

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