Since the early 2000s, the H5N1 bird flu has sickened wild and domestic birds around the world -- and sometimes humans and other mammals, too. Learn how this strain of avian influenza works (and why it seems unlikey to cause a pandemic, but researchers are still watching it closely) in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/life/cellular-microscopic/bird-flu.htm

Where Do Butternut Squash Come From?
10:07

How Did the Great Stink of London Work?
12:10

BrainStuff Classics: How Do Blue Whales Work?
08:41