How much Nature do we have? How much do we use? | Mathis Wackernagel | TEDxSanFrancisco

19:54
The earth, overconsumption and you: Fred Gale at TEDxLaunceston

17:53
Plantando a chuva para obter abundância | Brad Lancaster | TEDxTucson

18:00
Three Steps to Cut Your Carbon Footprint 60% Today | Jackson Carpenter | TEDxAsheville

16:13
Why do we celebrate incompetent leaders? | Martin Gutmann | TEDxBerlin

17:33
Why renewables can’t save the planet | Michael Shellenberger | TEDxDanubia

14:07
What’s happening in the arctic and why it matters to you | Elizabeth Arnold | TEDxSeattle

19:58
Cross cultural communication | Pellegrino Riccardi | TEDxBergen

16:49