The International Union of Soil Sciences (IUSS), founded in 1924 under the name International Society of Soil Science, is a scientific union and member of the International Council for Science (ICSU). The Union has 86 national and regional member societies with about 60,000 scientists in several countries and individual members in 57 countries. Every four years, the IUSS holds the World Congress of Soil Science. The Secretary is Sigbert Huber. He is an officer of the Environment Agency Austria (Umweltbundesamt), located in Vienna. Mission The purpose of the IUSS is to promote all branches of soil science and its applications, to promote contacts among scientists and other persons engaged in the study and the application of soil science; to stimulate scientific research and to further the application of such research. The IUSS is a founding partner of the International Year of Planet Earth and supports all of its activities. The IUSS has contributed to the International Year of Planet Earth's brochure "Soil – earth's living skin", which has been translated into several languages. The IUSS publishes monthly the IUSS Alert and twice a year the IUSS Bulletin. December 5 is celebrated as the World Soil Day. Organization: The Divisions The IUSS has Divisions and Commissions in the following areas: Division 1 – Soils in space and time C1.1 Soil morphology and micromorphology C1.2 Soil geography C1.3 Soil genesis C1.4 Soil classification C1.5 Pedometrics C1.6 Paleopedology Division 2 – Soil properties and processes C2.1 Soil physics C2.2 Soil chemistry C2.3 Soil biology C2.4 Soil mineralogy C2.5 Soil interfacial reactions Division 3 – Soil use and management C3.1 Soil evaluation and land use planning C3.2 Soil and water conservation C3.3 Soil fertility and plant nutrition C3.4 Soil engineering and technology C3.5 Soil degradation control, remediation, and reclamation Division 4 – The role of soil in sustaining society and the environment C4.1 Soil and the environment C4.2 Soil, food security, and human health C4.3 Soil and land use change C4.4 Soil education and public awareness C4.5 History, philosophy, and sociology of soil science This structure and the Commissions have grown from the original six Commissions established in 1924. In addition, the IUSS holds many Working Groups. Every Working Group is associated to a Commission. Organization: The President Until 2014, the IUSS President was designated by the national soil science society that was responsible for the next World Congress of Soil Science. This was