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  1. All About Humidity - Education

    At 100 percent relative humidity, the air is completely saturated with water vapor. If the air cools a little, such as rising to a higher altitude, the water vapor can condense as fog, clouds, and …

  2. All About Climate - Education

    state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness.

  3. Humidity - National Geographic Society

    Oct 19, 2023 · Humidity is blamed for all kinds of negative things, including mold in your house (usually the bathroom, where it's wet much of the time), as well as malfunctions in regular …

  4. Köppen Climate Classification System - National Geographic Society

    Jul 19, 2024 · The Köppen climate classification system is one of the most common climate classification systems in the world. It is used to denote different climate regions on Earth …

  5. The Chicago Fire of 1871 and the 'Great Rebuilding' - Education

    On October 8, 1871, a fire broke out in a barn on the southwest side of Chicago, Illinois. For more than 24 hours, the fire burned through the heart of Chicago, killing 300 people and leaving one …

  6. Biomes - National Geographic Society

    A biome is an area classified according to the species that live in that location. Temperature range, soil type, and the amount of light and water are unique to a particular place and form …

  7. Desert - National Geographic Society

    Oct 28, 2025 · Although humidity is high, the atmospheric changes that normally cause rainfall are not present. A coastal desert may be almost totally rainless, yet damp with fog.

  8. The Five Major Types of Biomes - Education

    A biome is a large area characterized by its vegetation, soil, climate, and wildlife. There are five major types of biomes: aquatic, grassland, forest, desert, and tundra, though some of these …

  9. The Influence of Climate Change on Extreme Environmental Events

    Oct 19, 2023 · Climate change affects global temperature and precipitation patterns. These effects, in turn, influence the intensity and, in some cases, the frequency of extreme …

  10. Ocean Currents and Climate - Education

    Jul 31, 2025 · Scientists across the globe are trying to figure out why the ocean is becoming more violent and what, if anything, can be done about it. Ocean currents, including the ocean …