This subcategory covers everything you need to know about atmosphere and weather. From atmospheric and space sciences, to the tools and instruments that meteorologists would use to study and predict the weather, you’ll find the information that you’re looking for. These tools could include barometers to measure the atmospheric pressure and hygrometers that measured the moisture content of the air. In addition, you’ll find content about all kinds of climates and layers of the atmosphere like the ionosphere, mesosphere and the stratosphere. This subcategory also includes information covering the Van Allen radiation belts and unique elements like atmospheric dust and the jet stream.