Soils are critical for all life—they act as a water filter and growing medium, supply nutrients for plant growth and contribute to biodiversity. Yet, despite the universal importance of healthy soil, we continue to lose approximately 5 to 7 million hectares each year through soil degradation – 24 billion tons of this non-renewable resource have been lost over the last century from the world’s arable land. Today, land and soil degradation affect approximately 1.5 billion people, and not just in arid or dry environments. June 17 is World Day to Combat Desertification, and this year’s theme is ‘Land Belongs to the Future - Let’s Climate Proof’. The International Atomic Energy Agency (IAEA), through its technical cooperation programme and the Joint FAO/IAEA Division, is helping Member States to address this goal by supporting the collection of data on soil and water interactions. Nuclear technology, and radioactive and stable isotope techniques in particular, play a very importa...