An increasing amount of usable space on our planet is crowded by humans. Whether we are using the space for permanent homes, vacation homes, travel accommodations, farming, public recreation, transportation, or office buildings, our chronic overuse of Earth's resources is pushing our ecosystem into uncharted territories. This has spurred many species extinctions, and we can expect the losses to continue to grow. Ecology of a Changed World outlines the importance of species conservation relative to human existence. The book breaks down ecological principles and explains six threats to biodiversity in terms anyone studying ecology, evolutionary biology, environmental science, or environmental justice will understand. Ecologist Trevor Price begins the book by breaking down population growth, food webs, species interaction, and other ecological principles. He draws on examples from agriculture, disease, fisheries, and societal growth throughout each chapter, offering insight into the relationships between demographic transitions, monetary exchanges, and ecosystems. Price focuses on six threats to biodiversity—climate change, overharvesting, pollution, habitat loss, invasive species, and disease—and offers the history, current status, and economic as well as environmental impacts of each of these. He ends the book with a rigorous review of the importance of species diversity, outlining the ways losses to our ecosystem will be a detriment to public health and global wealth. Taking readers through competition, predation, and parasitism, Ecology of a Changed World helpfully traces what has occurred on our planet throughout history, why these things happened, and how we can use this information to determine and shape our future.