Floods are the most frequent type of natural disaster and occur when an overflow of water submerges land that is usually dry. Floods are often caused by heavy rainfall, rapid snowmelt or a storm surge from a tropical cyclone or tsunami in coastal areas. Floods can cause widespread devastation, resulting in loss of life and damages to personal property and critical public health infrastructure. Between 1998-2017, floods affected more than 2 billion people worldwide. People who live in ... Land degradation is caused by multiple forces, including extreme weather conditions, particularly drought . It is also caused by human activities that pollute or degrade the quality of soils and land utility. It negatively affects food production, livelihoods, and the production and provision of other ecosystem goods and services. Desertification is a form of land degradation by which fertile land becomes desert. Cholera is an extremely virulent disease. It affects both children and adults and can kill within hours if left untreated. Severe cases need rapid treatment with intravenous fluids and antibiotics. Millions in the greater Horn of Africa are facing acute hunger as the region faces one of the worst droughts in recent decades, compounded by years of conflict and instability, the impact of the COVID-19 pandemic and rising food prices due to, in part, the war in Ukraine.