A light-year is a way of measuring distance, which doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. So, how does a light-year measure distance?| HowStuffWorks
Even though it's tiny compared to the rest of the universe, Earth is a complex planet that, so far, is the only one we know of that sustains life.| HowStuffWorks
The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. But what is it exactly, and what will happen when it burns itself out?| HowStuffWorks
Ever wonder how a toaster knows when something is done? Does it pop it up regardless? Does it really care if you pick "Light" or "Medium" or "Dark"?| HowStuffWorks
The light bulb hasn't changed a whole lot in its 120 years -- the original design was just that good. Apparently, you can throw together a filament, a glass mount, an inert gas and a bit of electricity and change the world. Learn what happens when yo| HowStuffWorks
