61.   That layer shields Earth from ultraviolet radiation, a cause of skin cancer and cataracts.

62.   The atmospheric observatory aboard the shuttle Atlantis has measured the level of ultraviolet radiation streaming to Earth from the sun with unprecedented accuracy, NASA researchers said Wednesday.

63.   The chemicals have been linked to a deterioration of the ozone layer that shields the earth from harmful ultraviolet radiation.

64.   The big labs and big money were focused on studying chemicals and, to some degree, ultraviolet radiation.

65.   The decline of frog populations in some of those lakes probably stems from other factors, namely ultraviolet radiation linked to ozone depletion, and residue from agricultural pesticides.

66.   The glasses are strong, light and, while a little more expensive than regular lenses, come tinted to protect the eye from ultraviolet radiation in sunlight.

67.   The new study suggests, however, that ultraviolet radiation might be responsible for at least some of the damage to living things seen in acidified lakes.

68.   The ozone layer in the stratosphere protects people, plants and animals against damaging ultraviolet radiation from the sun.

69.   The prevalence of the different isotopes varies according to whether sulfur molecules have been broken apart by ultraviolet radiation from the sun.

70.   The sealer should include an ultraviolet radiation screen and a mildew inhibiter.