Elemental

"Porder's clear and concise writing is perfect for teens interested in ecology, climate science, and chemistry."---George Kendall, Booklist

Auteur
Stephen Porder is the Associate Provost for Sustainability and the Acacia Professor of Ecology, Evolutionary and Organismal Biology, and Environment and Society at Brown University. His writing has appeared in the New York Times, Time magazine, the American Scientist, and other leading publications. He is cofounder of Possibly, which airs on The Public’s Radio and provides practical advice on sustainability to a general audience.

Texte du rabat

"Over the past four billion years of Earth's history, three organisms-cyanobacteria, plants, and humans--have altered the planet in profound ways by harnessing the availability of five key elements. Hydrogen, oxygen, carbon, nitrogen, and phosphorus are the most common elements in all forms of life on Earth, and all five circulate between the biotic and abiotic world in biogeochemical cycles. When organisms tap into stores of these elements and change these cycles, they change the atmosphere, climate, and, by extension, the trajectory of life on earth. In the first part of the book, Porder explains how cyanobacteria and plants harnessed critical elements and how their success in doing so was followed by environmental collapse in the form of ice ages. Porder then turns to human-caused climate change. He explores the dramatic ways humans have altered the cycles of these five essential elements and explains the profound effect our actions have on the planet. Porder concludes by exploring how we can reduce our impact on the Earth-both individually and societally-by reorienting ourselves toward recycling critical elements instead of extracting them from more and more obscure sources. Ultimately, understanding the role of element cycling is essential to understanding how humans came to be so successful and to putting us on a path to a sustainable future"--

Résumé

An ecologist explores how life itself shapes Earth using the elemental constituents we all share

It is rare for life to change Earth, yet three organisms have profoundly transformed our planet over the long course of its history. Elemental reveals how microbes, plants, and people used the fundamental building blocks of life to alter the climate, and with it, the trajectory of life on Earth in the past, present, and future.

Taking readers from the deep geologic past to our current era of human dominance, Stephen Porder focuses on five of life’s essential elements—hydrogen, oxygen, carbon, nitrogen, and phosphorus. He describes how single-celled cyanobacteria and plants harnessed them to wildly proliferate across the oceans and the land, only to eventually precipitate environmental catastrophes. He then brings us to the present, and shows how these elements underpin the success of human civilization, and how their mismanagement threatens similarly catastrophic unintended consequences. But, Porder argues, if we can learn from our world-changing predecessors, we can construct a more sustainable future.

Blending conversational storytelling with the latest science, Porder takes us deep into the Amazon, across fresh lava flows in Hawaii, and to the cornfields of the American Midwest to illuminate a potential path to sustainability, informed by the constraints imposed by life’s essential elements and the four-billion-year history of life on Earth.