Humanity's planet-shaping powers -- and what they mean for the future

Humanity now has incredible power to shape nature and the Earth: the power to destroy and the power to repair, says sustainability champion and UNDP Administrator Achim Steiner. In this action-oriented talk, Steiner shows how this power is putting our own survival at risk -- and takes us on a global tour of individuals and societies that are choosing to write a new, sustainable and equitable chapter for people and the planet.