Joel Barker and fellow futurist Scott Erickson offer a bold new way of looking at today's rapidly evolving technologies: as five distinct "ecosystems" that each operates with a distinct set of values, advantages, and disadvantages: Supper Tech: Bigger, better, more! (e.g., fusion power) ; Limits Tech: Use what you've got (e.g., aerogel insulation) ; Local Tech: Think small, think home (e.g., electric wind turbines) ; Nature Tech: Be one with nature (e.g., organic plastics) ; Human Tech: What lies within us (e.g., stem cells).