Throughout history, agricultural success raised up countries and empires. Its failures led to ruin and death in dramas with antagonists such as floods, droughts, insects, blights, and the worst-depleted eroded soils. But, there's more. Climate scientists gave us a new set of worries about something they call climate change: --Hotter summers --More droughts --Megafires in the forests --Rising sea --Crop failures --And...