There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...

Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

Your aortic valve is part of your heart, a strong muscle that pumps blood through your body. The aortic valve controls the blood flowing out from the heart. It opens every time your heart contracts, ...