The impetus for the creation of a coordinated observing system to provide baseline data and ensure sustained monitoring came from IOC in the late 1980s and resulted in the creating of the Global Ocean Observing System (GOOS) in 1991.

UNESCO: World Water Assessment Programme (WWAP)

Impartial third-party monitoring from an initial baseline level of forests is essential for the real success of the programme, along with a willingness to withhold payments to countries who do not comply.

ECONOMIST: Letters