Mashable: California's drought is far from over -- but high-tech companies are stepping in to help. The state is facing its driest year in decades, following an unusually rain-free winter. California's central valley, the fruit and nut basket of the world, is suffering the consequences. In response, startups are offering solutions such as drones, aerial imagery and data analytics to help deliver water to only the parts of farmers' fields that need it. Indiana-based PrecisionHawk uses small plane-like drones...