Earth's Library: Estimating Book Publishing Trends Related to Climate Change

Earth's Library: Estimating Book Publishing Trends Related to Climate Change

For a study I am working on this semester while on sabbatical at Harvard University, I wanted to try to estimate book publishing trends over time related to climate change, renewable energy, sustainable development, and population growth. After consulting with several librarians, my best option was to estimate these publishing trends by way of the WorldCat.org database which compiles library holdings across countries. In the figure below, based on a search of the WorldCat database, I plot the number of books by year and catalog subject term, using library holdings as a proxy for books published per year.


The trends are interesting. First, the sheer number of books published are amazing.  Consider that since 1970 more than 180,000 books have been published on energy conservation and renewable energy; more than 65,000 focused on biodiversity, species, and natural resource conservation; more than 40,000 focused on sustainable development and the environmental aspects of globalization; more than 34,000 on climate change, global warming, or global environmental change; and more than 6,000 books on over-population and population policy.

Second, notice the explosion of books during the 1970s on energy conservation and renewable energy and then the leveling off during the 1980s.  Also notice following the 1992 Rio Environment Summit the rise in books published focused on sustainable development and biodiversity.  Though starting in the mid-2000s as climate change-related books spiked, publishing on these other topics declined, perhaps representing the tendency during this period for climate change to be a meta-problem through which most other environmental issues were viewed and discussed.  Finally, despite its linkages since the 1970s to environmental degradation and later to climate change, overpopulation as a topic has not received nearly the same focus by book publishers and authors as the other topics tracked.

What do readers think of these trends?  Know of other ways to estimate book publishing trends over time?  Ideas on other interpretations of these trends or uses for the WorldCat.org database?

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