Differences in terminology and language can be major barriers to effective international collaborations -- such as in the development of (often delicate) environmental protection agreements. To reduce these barriers, several European and US environmental agencies have joined forces to develop a common terminology system, called GEMET. This General Multilingual Environmental Thesaurus (GEMET) is "a vocabulary of more than 6,500 controlled terms (keywords), representing broad environmentally significant concepts." This Website serves as a gateway into GEMET. Here users will find the various components of the thesaurus, including the impressive multilingual list of descriptors. GEMET 2.0 was edited in British and American English, with equivalents in ten European languages.