Hi Karthik, I agree with what the other responders have said, and I just want to remind you that lots of fantastic scientists never won a science fair or other science competition. In a science fair, there can be only one or a few "winners," even if many of the entries are spectacular. In ...

Hi Joshua, Two quick recommendations: if you glue a design on, you could cut the design where the folds are, so that it doesn't wrinkle when you fold it. Or, if you paint it on, regular acrylic paints would probably work fine. They're cheap and available at any arts and crafts store (and probably at...

Hi Van, Vinegar and coke do different things to pennies: coke will remove dark tarnish, while vinegar will create a green tarnish. As you might already know, the dark tarnish on old pennies is created when the copper surface of the penny reacts with oxygen in the air to form copper oxide. Coke conta...

The website <http://wilstar.com/caffeine.htm> gives the amount of caffeine (in milligrams) in 8 ounces of drip, brewed, espresso, and instant coffee. If you're trying to find the amount of caffeine in a particular drink, you'll probably need to determine how much coffee (and what type) is is the dri...