Cradle to Cradle, remaking the way we make things

William McDonough i Michael Braungart

Radical simplicity, small footprints on earth

Jim Merkel

Cosmos

Carl Sagan

Biomimicry. Innovation inspired by nature

Janine M. Benyus

The ecology of commerce

Paul Hawken

Our ecological footprint

Mathis Wackernagel
William Rees

Natural capitalism

Paul Hawken
Amory Lovins
L. Hunter Lovins

The skeptical environmentalist

Björn Lomberg