Adam Shaw reports from drought-stricken Texas on a small farm's use of hydroponics to grow produce. Also: large-scale cotton and wheat farms that use remote-control pivot-irrigation technology to increase yields.
Three people with incurable conditions learn whether treatments might become available. Included: a young woman with a spinal-cord injury; a father of four with a damaged heart; a young man whose leg was amputated.
Factors that contribute to violence are examined, including the role brain chemicals play in controlling aggression, why sleepless nights can contribute to outbursts and the link between brain damage and domestic violence.