21.  As a result, clear skies and calm winds will allow for rapid cooling tonight, especially in rural areas of the interior Northeast where isolated frost is possible.

22.  As the weather satellite peered through the vast expanse of clear skies over the Northeast Saturday morning, sinuous, thin fingers of grayish white outlined river valleys.

23.  As high pressure settles across the Great Lakes, clear skies will combine with weakening winds after sunset to promote comfortable sleeping conditions from Michigan to the Appalachians.

24.  At night, you may be rewarded with clear skies, and then Arenal becomes a feast for the eyes.

25.  B. POLLUTION HITS NEW HEIGHTS Mountain air and clear skies over snow-capped peaks may appear to epitomize clean, healthy living and unpolluted purity.

26.  Because of the clear skies, about half of those missions actually fired missiles or dropped bombs, Shea said.

27.  Benefiting from clear skies, Russian aviation carry out a record number of attacks on Grozny, according to Russian press reports.

28.  -- Clear skies over the southern Balkans created ideal conditions for allied attacks early on Sunday morning.

29.  -- With a clear sky, all these planets can be seen easily without a telescope.