11.   Scientists expect FAST to be in use for at least two years, before its orbit decays or radiation damages it.

12.   Thyroid deficiency, which can occur if radiation to the chest or neck damages the thyroid gland, can also be remedied with medication.

13.   RBEs indicate the extent to which radiation damages the human body.

14.   Unlike most of the climbers, Swarner was breathing the thin air with a right lung partially damaged by radiation from cancer treatment.