UN Convention on Biological Diversity enters into force with 168 signatories
The Convention on Biological Diversity became binding international law on December 29, 1993, committing nations to protect the planet’s living systems as “a common concern of humankind.” Born at the Rio Earth Summit a year earlier, it drew 168 signatures — the largest sign-on to any environmental treaty at that point. It reframed conservation from saving single species to safeguarding the full web of life.









