61.   UV radiation is harmful to many plants and animals, and has been shown to be a cause of skin cancer.

62.   UV radiation is not visible, but it is felt as heat and can damage the eyes and skin.

63.   UV radiation is not visible, but is felt as heat and can damage the eyes and skin.

64.   While radiation is clearly a danger, some physicians are cautious about attributing its effects.

65.   The radiation was strong enough to kill humans in one hour of exposure, it said.

66.   These standards are based on whether the radiation is strong enough to cause a batch of tissue to warm up.