Planetary Health by Samuel Myers

Author:Samuel Myers
Language: eng
Format: epub
Publisher: Island Press
Published: 2020-08-15T00:00:00+00:00

SURPRISES

One of the recurring themes in planetary health is that modest changes in one system—the chemical composition of the atmosphere, in this case—can lead to a cascade of effects across other physical and biological systems, with consequences that are hard to predict. That more trapped energy on the planet would lead to rising temperatures, causing ice melting and thermal expansion of water, had long been predicted. But that the resulting sea-level rise would cause saltwater intrusion into coastal aquifers and increase the risk of preeclampsia and gestational hypertension among Bangladeshi women was something nobody anticipated. Nor would it have been easy to anticipate that modest increases in atmospheric CO2 would make our food less nutritious and put hundreds of millions of people at increased risk of micronutrient deficiencies. The complexity of Earth’s systems and their even more complex interactions make it highly likely that we will continue to encounter unanticipated health impacts of climate change and other types of anthropogenic environmental change.

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