You may think that avian flu is limited to one corner of the world and has little significance for your well-being. Consider this: A different avian flu strain once resulted in one of the worst epidemics the world has ever seen. Scientists believe the current bird flu strain is one step away from recreating such a catastrophe. Take this quiz and learn about this vicious and deadly flu strain.
How much do you know about how car engines work? And how much do you know about how the English language works? And what about how guns work? How much do you know? Lucky for you, HowStuffWorks is about more than providing great answers about how the world works. We are also here to bring joy to your day with fun quizzes, compelling photography and fascinating listicles. Some of our content is about how stuff works. Some is about how much you know about how stuff works. And some is just for fun! Because, well, did you know that having fun is an important part of how your brain works? Well, it is! So keep reading!