The International Union of Soil Sciences, or IUSS for short, is like a big club for people who study soil, which is the dirt and other stuff that covers the ground.
Just like how you have friends and family members who like different kinds of games or movies or sports, there are people all over the world who are interested in things like how soil is formed, what kind of nutrients it has, how plants grow in it, and how it can be protected or improved.
The IUSS brings together these people from all over the world to talk about their research, exchange ideas, and work together to make sure that people everywhere have access to healthy soil.
By working together, the IUSS helps us to understand how the soil supports plants and animals, how it affects climate and the environment, and how it can help us grow crops and food to feed our families and communities.