Thomas S. Kuhn's classic book is now available with a new index.

Ecologically responsible policies are concerned only in part with pollution and resource depletion. There are deeper concerns which touch upon principles of diversity, complexity, autonomy, decentralization, symbiosis, egalitarianism, and classlessness.

In this paper I examine the interconnections between two paradigms of technology, nature, and social life, and their associated environmental impacts. The dominant technocratic philosophy which now guides policy and technological power is mechanistic. It conceptualizes nature as a resource to be controlled fully for human ends and it threatens drastically to alter the integrity of the planet’s ecosystems. Incontrast, the organic, person-planetary paradigm conceptualizes intrinsic value in all beings. Deep ecology gives priority to community and ecosystem integrity and seeks (...) to guide the design and applications of technology according to principles which follow from ecological understanding. I describe this shift in paradigms and how it affects our perceptions, values, and actions. (shrink)

In this paper I examine the interconnections between two paradigms of technology, nature, and social life, and their associated environmental impacts. The dominant technocratic philosophy which now guides policy and technological power is mechanistic. It conceptualizes nature as a resource to be controlled fully for human ends and it threatens drastically to alter the integrity of the planet’s ecosystems. Incontrast, the organic, person-planetary paradigm conceptualizes intrinsic value in all beings. Deep ecology gives priority to community and ecosystem integrity and seeks (...) to guide the design and applications of technology according to principles which follow from ecological understanding. I describe this shift in paradigms and how it affects our perceptions, values, and actions. (shrink)

Change and necessity is a statement of Darwinian natural selection as a process driven by chance necessity, devoid of purpose or intent.

This classic work is reissued with a new preface by the author. Written for non-scientists the idea is put forward that life on Earth functions as a single organism.