Add Yahoo as a preferred source to see more of our stories on Google. For most of us, when we think of Alka Seltzer, the catchy jingle from the 70s is the first thing that comes to mind: "Plop, plop, ...

Using a few materials from around the house, you can create a rocket. It's an out-of-this-world experiment that will teach you force, motion and chemical reactions. STEP 2: Place one of the ...