During the springtime or after playing with your friend's cat, you may be wondering why you have an itchy nose and throat. Amongst other symptoms, you may be reacting to allergies. In this video, a professional describes why someone...

A collection of videos highlighting science news. Covers a diverse range of topics such as crowdsourcing, bio-inspired materials, and vaccines.

What is type I hypersensitivity? Most allergies are caused by type I hypersensitivity reactions. This video covers the pathophysiology, complications, signs and symptoms, and treatment of type I hypersensitivity reactions. [9:00]

Ten-year-old Owen explains how he's able to live a normal life, even though he has a peanut allergy. Learn more with this video from Arthur: "Binky Goes Nuts."

Kellie and Kristen, both allergic to nuts, prove nut-free chocolates can be delicious, in this video from Arthur: "Binky Goes Nuts."

This lesson will examine what immunotherapy is and how it is used in the medical field today. It is 1 of 6 in the series titled "Immunotherapy."

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...

Rich-media overview of allergies includes a short narrated video animation of how the immune system reacts to allergens. [2:24]

Learn about several different kinds of common allergies, and the triggers that cause a reaction. [2:02]

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...

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.

Got allergies? We'll talk about the biology and physics of pollen.