1.   -- Keep houseplants away from heat sources and open vents, which will cause leaves to turn brown on the edges.

2.   He opens these vents in spring, summer, and fall, mainly for ventilation, because there is no problem with humidity.

3.   Hold a metal container under the valve port and open the vent with a screwdriver.

4.   On very cold days the vent can be opened to allow the warm air into the wall cavity.

5.   You can open the vent occasionally in the winter if excess moisture builds up.

6.   On Tuesday, eruptions opened a vent on the western side of the mountain, exposing that side of the island to lava danger for the first time.