The biggest winners of a sophisticated water market are likely to be the very few water-rich regions of the global north that can profitably move massive quantities across huge distances.
Luoyang in the northern is a water-rich area rarely found in the water-short zones in China. After the construction of Xiao Langdi Reservoir, the water table has risen several meters.
Evidence from other studies suggests that exclusion of fire results in markedly decreased plant-species richness, often with an increase in tree density.
A few blocks east of Gratiot, multicoloured polka dots, stripes and squiggles appear on the street, then the houses explode in a riot of colours and textures.
The ancient Maya were presumably more experienced and did better, but nevertheless they too must have faced risks of crop failures from droughts and hurricanes.
Examining the period 1870-1920, Keyssar concentrates on Massachusetts, where the historical materials are particularly rich, and the findings applicable to other industrial areas.
Primitive as these weapons may have been, they gave early humans a huge advantage in hunting for calorie-rich meat and for defending themselves from predators or other humans.