My sister-in-law lugs a heavy bucket of water around her herb garden, gives each plant a long sip. "It's been three weeks since we've had rain," she sighs looking out over the dusty vegetable garden and the shriveled brown grass in the pasture beyond. We help my brother pick beans and pull the weeds around them. The dry ground pulls back and some of the weeds snap off above the roots. We give up in the strawberry plants, sit on the porch, listen to the dogs pant. We travel home in an air conditioned bubble. The whole length of the Shenandoah valley is crispy brown, the corn stunted. We pull into our Amish county driveway, greener here but the grass is short and the air hot. We breathe shallow breaths, unpack, crank the air conditioning. No rain in the forecast, three weeks and counting. Saturday there will be a wedding, an outdoor wedding, and finally rain threatens. Stuart is on the phone with the bride. "Pray that the rain holds off," she says. Saturda...