National Science Foundation
National Science Foundation: Science Behind the News: Allergies
A plant biologist explains what causes seasonal allergies to be worse some years than others, and how allergens cause a reaction in the human body. Factors that affect susceptibility to allergies are described, as well as the potential...
Other
Nebraska Medical Center: Allergic Reactions
Rich-media overview of allergies includes a short narrated video animation of how the immune system reacts to allergens. [2:24]
BBC
Bbc: What Are the Causes of Allergies?
Learn about several different kinds of common allergies, and the triggers that cause a reaction. [2:02]
PBS
Pbs Teachers: Hygiene Hypothesis
Determine whether childhood exposure to livestock provides the challenges necessary for the young immune system to grow strong enough to later fight off asthma and allergies. Discover how the modern trend toward "supercleanliness" can...
Science Friday Initiative
Science Friday: Seasonal Allergies
If you're a sufferer of seasonal allergies, you may not need to be told that in some parts of the country, the spring allergy season is in full swing. We'll talk allergies this hour.
Science Friday Initiative
Science Friday: Pollen
Got allergies? We'll talk about the biology and physics of pollen.