51.   But the greater discoveries were not about China or Fao Sek but about my mother, a woman I thought I knew so well.

52.   But the discovery was also an anticlimax.

53.   But the discovery is an opening, experts said.

54.   But the discovery is bittersweet.

55.   But the most disquieting subterranean discoveries are of workers.

56.   But the most striking discovery White made was that the rumors about the girls bore little resemblance to the truth.

57.   But the most remarkable discoveries are inside the former company storehouse that Pierson occupies.

58.   But the umbilical-cord discovery is limited and the adult stem-cell breakthrough may be illusory, according to the scientists who did the research.

59.   But this dark galactic discovery is strangely familiar too, and a fitting symbol for a lot of everday mysteries on planet Earth.

60.   But they are relatively rare, because discovery is harder than understanding.