Hygrometers measure humidity—the amount of water vapor in the air—which impacts the health of people and plants, the preservation of treasured wood furniture and collectibles, and even the structural ...

The maintenance of optimal indoor air quality necessitates vigilant temperature monitoring within the room. If the room becomes excessively hot, the individual should activate the air conditioner.

My high school had a weather station on the roof so earth-science students could make measurements each morning. We climbed up a ladder in the janitor's closet, went through a hatch and out onto the ...