The Convention on Biological Diversity (CBD) was first opened for signature during:

The Convention on Biological Diversity was first opened for signature at the Earth Summit in 1992.

This Rio de Janeiro gathering was the UN Conference on Environment and Development.

The Conference on the Human Environment was the 1972 Stockholm meeting, well before the treaty.

The Montreal Protocol addresses ozone-depleting substances, a separate agreement.

A Conference of the Parties meets under a treaty after it exists, not to open it for signature.

The convention rests on conservation, sustainable use and fair sharing of genetic resources.