41.   Just a few games into the match, he ditched them when the humid air circulating under the closed retractable roof steamed up the lenses.

42.   Later Wednesday night and Thursday, progressively colder air will circulate over the relatively tepid Great Lakes, setting the stage for heavier snow showers downwind of the lakes.

43.   Mixed showers are expected in the Bitterroots as chilly air circulates uphill.

44.   Much colder air will circulate into the Great Lakes region as a large storm near Lake Huron weakens.

45.   Put in a louvered door to allow basement air to circulate into that room, or put vents in the wall, as low to the floor as practical.

46.   Scattered showers and thunderstorms will develop over parts of the northern Plains as moist air circulates westward around the Kansas City low.

47.   Solvents and heavy-duty detergents are harsh chemicals, so wear rubber gloves and allow fresh air to circulate in the room.

48.   Some aprons have solid panels, but most have a lattice design that allows air to circulate under the porch.

49.   Spread out fruit on a parchment-lined baking sheet, making sure there is space between each piece to allow air to circulate.

50.   Take off the back of the piece of furniture to let the air circulate.