When tragedies are in the news — natural disasters, plane crashes, fires — parents naturally and unavoidably react by thinking about what might happen to their own children. And children worry in turn about what might happen to them.

We're starting off with analysis of new satellite images that show the extent of the damage caused by deadly flashing flooding in south-west Texas. It has killed more than 100 people including at least 27 at a Christian summer camp.

In 1987, sudden and intense rainfall caused the river to surge at an unprecedented rate in mid-July, leading to a tragedy that killed 10 campers at Pot O' Gold Christian Camp, a summer camp near Comfort, Texas. The campers drowned when their bus attempted to evacuate them and was overtaken by floodwater.