51.   NASA officials said the decreased ozone hole is not yet an indication of a recovery, noting year-to-year variations depend primarily on the weather.

52.   So far, he said, there is no sign that the ozone hole has caused harm to the few people living in the region.

53.   That will help scientists monitor the behavior of the ozone hole that appears annually over Antarctica and the pattern of movement of greenhouse gases.

54.   The findings may offer clues to the behavior of the ozone hole over Antarctica and the movement of greenhouse gases.

55.   The ozone hole is on the Atlantic side of the Antarctic, between the southern tip of South America and South Africa in the southern Atlantic Ocean.

56.   The ozone hole that develops over the Antarctic every September and October is lasting longer this year than in the past, a scientist said Wednesday.

57.   The ozone hole over Antarctica that lets dangerous ultraviolet light reach the Earth formed early this year and is bigger than ever, scientists said Tuesday.

58.   The size of the ozone hole has doubled each of the previous four years.

59.   The ultraviolet-B light shining through the ozone hole caused lesions in the eggs and larvae of icefish, they found.

60.   They said year-to-year variations of size and depth of the ozone hole depend primarily on the variations in weather.