A Rulebook for Arguments

1986

Creativity for Critical Thinkers

2006

The Incompleat Eco-Philosopher

Essays from the Edges of Environmental Ethics

2009

An Invitation to Environmental Philosophy

1998

A Practical Companion to Ethics

1996

Back to Earth

Tomorrow's Environmentalism

1994

A 21st Century Ethical Toolbox

2000

How to Re-imagine the World

A Pocket Guide for Practical Visionaries

2007

Mobilizing the Green Imagination

An Exuberant Manifesto

2012