Food security is a growing concern for our global population of close to 8 billion people. The essential natural resource that controls food production is soil, which is being eroded away and degraded worldwide. Without healthy soils, our capability to provide adequate food for billions is seriously in question. Methods for improving degraded soils are available.
Flooding that filled the Central Valley region of California to the point of becoming an inland sea, with water lapping from the Coast Ranges to the Sierra Nevada foothills, was part of Native American oral traditions. And that is exactly what happened in the Great Flood of 1862. If a similar major flood occurs, there will be catastrophic consequences.
Five hundred years ago the Inca Empire stretched across the Andes Mountains of South America, encompassing arid coastal deserts, snow-covered mountains, and humid rainforests.... Since the empire fell in the 16th century, there is something that no subsequent government ruling over this territory has successfully achieved.
High in the Andes Mountains, the archaeological site of Moray holds many mysteries. Starting with natural sinkholes, Inca builders lined a set of huge circular depressions with concentric terraces. Constructing Moray required tremendous engineering skill and thousands of hours of construction efforts, so why was it built?
