21.   There was ice on the seats in the park.

22.   And after every take, all the ice was gone, and we had to go all the way down the hill to get new blocks.

23.   Another time, Weinman had tried a solo ascent and turned back because the ice was not right.

24.   And yet they continued to skate as if the ice was a minefield.

25.   Arctic ice was both a hazard and a haven, its jagged downward spikes threatening to pierce submarines as well as providing visual and acoustic cover.

26.   As far as romance goes, ice is not especially nice.

27.   As Montgomery explains, ice is always growing, melting, moving, breaking.

28.   Astronomers say the sizes of these blocks and of the ridges running alongside the cracks suggest the ice must be a little more than a mile thick.

29.   At the foot of the slope was ice.

30.   Because polar sea ice is already afloat, it has little direct effect on global sea levels.