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13269 results in Environmental science

Page 14 of 664

How to Fix a Broken Planet
  • Advice for Surviving the 21st Century
  • Julian Cribb
  • Published online:
    15 January 2023
    Print publication:
    05 January 2023
  • Do you want to help save human civilisation? If so, this book is for you. How to Fix a Broken Planet describes the ten catastrophic risks that menace human civilisation and our planet, and what we can all do to overcome or mitigate them. It explains what must be done globally to avert each megathreat, and what each of us can do in our own lives to help preserve a habitable world. It offers the first truly integrated world plan-of-action for a more sustainable human society - and fresh hope. A must-read for anyone seeking sound practical advice on what citizens, governments, companies, and community groups can do to safeguard our future.

  • 1 - Existential Emergency

  • Julian Cribb, Council for the Human Future
  • Book:
    How to Fix a Broken Planet
    Published online:
    15 January 2023
    Print publication:
    05 January 2023, pp 1-11
    • Chapter
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  • Summary

    This chapter examines the ten mega-threats, how they link and why they must be solved together; why the solutions must occur at both global and personal levels; and the importance of the individual in saving humankind.

  • Bilateral collaboration between the Greenland (Kalaallit Nunaat) and United States Research Communities – from a vision to everyday practice

  • Jennifer L. Mercer, Josephine Nymand, Lauren E. Culler, Rebecca Lynge, Sten Lund, Bo Gregersen, Brett Makens, Ross A. Virginia, Kristian G. Moore
  • Journal:
    Polar Record / Volume 58 / 2022
    Published online by Cambridge University Press:
    23 December 2022, e42
    • Article
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      • Open access
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  • Each year, hundreds of international researchers enter Greenland to conduct scientific fieldwork. Historically, they have had little interaction with local communities and scientists at Greenland research institutes. Recognising that collaboration between Greenland and the United States can yield better research, consider more diverse perspectives, articulate the benefits of research to Greenland society, and train the next generation in a collaborative framework, representatives from both countries have been engaged in a series of events to cultivate bilateral relationships. Here, we describe the process of these events (workshops, conference sessions, and public dialogues), the findings, and the outcomes that have followed. Prior to this focused engagement, United States and Greenland scientists typically pursued their research independently. Since the engagement, more researchers from both countries have successfully partnered to obtain funding for collaborative research. Furthermore, development of a bilateral collaboration network is underway. The focused approach on bilateral engagement also proved essential for maintaining research and other activities during the global pandemic. When United States researchers were prevented from entering Greenland, their Greenland partners were able to continue the fieldwork, ensuring that progress was not lost. Future international projects can build on these successes to expand collaborative and interdisciplinary research in Greenland.

  • The question of Icebergs: a cryo-history of Arctic submarine cables

  • Mette Simonsen Abildgaard
  • Journal:
    Polar Record / Volume 58 / 2022
    Published online by Cambridge University Press:
    16 December 2022, e41
    • Article
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      • Open access
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  • “The Question of Icebergs” is a cryo-history (Sörlin, 2015) of Arctic infrastructures: How has ice and snow shaped communication infrastructures in the Arctic by both drawing in and deterring interest in travelling through, connecting with and building in the region? This study follows the case of the 160-year-old plans for “The Northern Route,” a transatlantic telegraph which would have placed Greenland, Iceland and the Faroe Islands at the centre of transatlantic communication in the early 1860s. I draw on Actor-Network Theory and postcolonial studies to trace how notions of the Arctic Sublime, a dependency on “credible ice witnesses,” local ice knowledges and the “politics of comparison” influenced the eventual abandonment of the route, where Arctic territories were (dis)regarded and considered as mere “substrate” for infrastructure. I argue that this cryo-history of Arctic telecommunication infrastructures is an essential contribution to a new socio-technical agenda in cable studies, which shows how established logics about who to connect, and where, still influence infrastructural development in the region today.

  • 5 - Fuel Cells and Hydrogen Production

  • Edited by Jacqueline O'Connor, Pennsylvania State University, Bobby Noble, Electric Power Research Institute, Tim Lieuwen, Georgia Institute of Technology
  • Book:
    Renewable Fuels
    Published online:
    01 December 2022
    Print publication:
    15 December 2022, pp 161-192

  • Summary

    Hydrogen will play an increasingly important role in the push toward greater use of renewable energy and the reduction in carbon emissions from the transportation sector, electrical energy generation and transmission, and the production of commodity chemicals, such as ammonia and polyolefins. In this chapter, the operating principles of fuel cells and electrolyzers are detailed. The main function of these devices is the interconversion of electrical and chemical energy.

  • 2 - Ground-Based Gas Turbines

  • Edited by Jacqueline O'Connor, Pennsylvania State University, Bobby Noble, Electric Power Research Institute, Tim Lieuwen, Georgia Institute of Technology
  • Book:
    Renewable Fuels
    Published online:
    01 December 2022
    Print publication:
    15 December 2022, pp 35-74

  • Summary

    Gas turbines play a preeminent role in the stationary power generation marketplace and are expected to remain a critical part of the market mix for the foreseeable future. Alternative technologies compete with gas turbines in certain size classes, but at power generation levels above 5 MW, gas turbines offer the most attractive option due to their relatively low capital, operating, and maintenance costs. The configurations for these systems involve high efficiencies as well. These engines are being looked to by the US Department of Energy and the major OEMs for clean power production, especially considering the use of renewable fuels. As a result, the market will continue to demand gas turbines for the foreseeable future.

Page 14 of 664