21.   It was at this camp one night in May that Erik Weihenmayer sat in his tent as a lightning storm moved across the mountain face.

22.   Lightning storms tend to settle on the open water like fireflies on darkened grass.

23.   Lightning storm?

24.   Lightning storms during the past month have caused these fires, but they are so far from anywhere people cluster that officials believe they can be allowed to burn.

25.   Lightning storms then stirred the primordial soup and created carbon-rich molecules that organized themselves into self-replicating units, or crude forms of life.

26.   Lightning storms, gale-force winds, and shoals lined with sandbars and rocks are common obstacles along the way.

27.   Scott lives outside Reno, and a lightning storm touched off a fire that moved fast and hot toward his neighborhood.

28.   Several river-riders ask him if it is safe to be on the raft, on the river, in a lightning storm.

29.   Scattered afternoon lightning storms may exacerbate wild fires near many mountain ranges.

30.   So far, only a dog and a lightning storm have triggered the warning system.