51.   Astronomers have discovered two strange stars whose nature is unlike anything they have ever seen, suggesting that the stellar objects are a new form of matter.

52.   As with Silver Springs, nature is relatively unchecked here.

53.   At issue is the nature of the current economic slowdown.

54.   At that moment, Takuro recognizes the capacity for life itself and how, in its unpredictability, nature is full of wonder and beauty.

55.   At Burning Man, nature is an opponent, with unforgiving windstorms, dust, lightning, heat and drought.

56.   Besides the well-understood standard, there also is the nature of a single-season record that makes it tidily comprehensible.

57.   A culture in which we expect nature to be a playground for our adventures, prepackaged with thrills but no danger.

58.   A contrary nature is one of the qualities that have kept Fernando from giving in.

59.   A lasting marriage is something to celebrate all right, and so is nature undisturbed.

60.   All the economic insecurity we feel and the stagnant nature of wages is related to this shift.