Soil is a non-renewable resource, and up to 90% of the planet's land could be degraded by 2050 due to intensive agricultural practices, overexploitation, and environmental pressures. This awareness informs "SoilTech innovations for sustainable soil and food security," a paper published in Nature Reviews Bioengineering, co-authored by two scholars from the University of Pisa. The study reviews the most advanced technological solutions to address this global challenge, identifying three major areas of intervention: preserving healthy soils, improving their productivity, and reclaiming degraded land. At the heart of the analysis are the so-called SoilTech technologies, a set of technologies that integrate bioengineering, digital tools, precision agriculture, and biological approaches based on the soil microbiome. From the use of organic and bio-based fertilizers to monitoring systems that combine environmental data, sensors, and artificial intelligence, to bioremediation techniques that use microorganisms and plants to reduce soil contamination, the review demonstrates how innovation and sustainability can go hand in hand. The goal is clear: to keep agricultural land productive without compromising its long-term health, thus contributing to food security in a context marked by climate change and geopolitical instability.