Lead by example

摘要

The United Nations Conference on Sustainable Development, which returns to Rio de Janeiro this month 20 years after the Rio Earth Summit of 1992, will be held under a cloud. The cities of Copenhagen, Nagoya, Canciin, Chang-won and Durban have all recently played host to meetings of the three major conventions that were established at the first Rio Summit - on biodiversity (CBD), climate (UNFCCC) and desertification (UNCCD). All are now bleak reminders of humankind's inability to deliver on sustainable development goals. So does Rio stand a chance of being more than just a collective moan about past failures?