If you are interested in going green with your laundry detergent, you can either buy an eco-friendly product or make your own. Either way, you will be doing your share in reducing the amount of harmful chemicals released into the environment. Check out our quiz and find out how you can help save our planet.
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!