Explanation:

Stockholm Convention is first ever-concerted global effort to save mankind from the adverse impact of Persistent Organic Pollutants (POP). It was called in 1995 by the Governing Council of the United Nations Environment Programme (UNEP), following its study on the Dirty Dozen. The Intergovernmental Forum on Chemical Safety (IFCS) and the International Programme on Chemical Safety (IPCS) prepared an assessment of dirty dozen. The negotiations began in 2001 and the convention came into being in 2004 after ratification by 128 parties.

The convention calls to outlaw nine of the dirty dozen chemicals, limit the use of DDT to malaria control, and curtail inadvertent production of dioxins and furans. As of January 2011, there are 172 parties to the Convention.