Book excerpt: How will we move towards sustainability? By learning through crisis, or by design? In this Briefing, Stephen Sterling points out that: Progress towards a more sustainable future critically depends on learning, yet most education and learning take no account of sustainability; The reorientation of education towards sustainable development since the Agenda 21 agreement of 1992 has been very slow; Education is largely behind other fields in developing new thinking and practice in response to the challenge of sustainability.