51.   Ms. Lewis and her cast work hard at finding a human heart.

52.   No iron spike can pierce a human heart as icily as a period in the right place.

53.   Now, as then, it reads like a blueprint of the human heart.

54.   One of the creatures, danced by Rebecca Jung, may have something like a human heart.

55.   One of his first photographs was of a heart-shaped leaf that reminded him that the human heart thrives on electrical stimulation.

56.   Out of reach of the human heart.

57.   Other experts, at New York Medical College, just reported compelling evidence that human hearts can grow new cells.

58.   Others have suggested the multisegment building resembles a human heart, the human inner ear, or worse.

59.   Others, at New York Medical College, just reported compelling evidence that human hearts can grow new cells.

60.   Rather, the bulk of the fatalities stemmed from the same weaknesses of the human heart and head that make life chancy in civilized locations.