11.   He noted that the ozone hole was usually largest in November or December, but that the greatest cooling had been about six months later.

12.   However, the shuttle observatory has not found those two compounds in the same high concentrations outside the ozone hole.

13.   Is it because the ozone hole is now the size of Antarctica?

14.   Magas said that he has been pressed by past university presidents not to talk about the ozone hole, since it is not his area of expertise.

15.   Measurement of the size and intensity of the Antarctic ozone hole is an international operation in which cooperation between NASA and the Russian space agency has become important.

16.   Mars has huge ozone holes and Venus is suffering from a runaway greenhouse effect, she said.

17.   Observations are expected to show how stratospheric ice crystals change in size and shape as the ozone hole is created, and how various crystal types affect ozone destruction.

18.   Radiation is pouring through an ozone hole six miles up in the sky.

19.   Remember the ozone hole?

20.   Scientists already knew that the ozone hole had cooled the upper atmosphere.