You can also calculate the cost of driving from Cincinnati, OH to Detroit, MI based on current local fuel prices and an estimate of your car's best gas mileage. If you're meeting a friend, you might be interested in finding the city that is halfway between Cincinnati, OH and Detroit, MI.
Cocoa beans contain caffeine, so the higher the percentage of cocoa in a chocolate bar, the higher its caffeine content. Likewise for coffee: Ounce for ounce, the more diluted the coffee drink, the less caffeine.
It's not just coffee beans: tea leaves, kola nuts (which flavor colas) and cocoa beans all contain caffeine. The stimulant is found naturally in the leaves, seeds and fruits of a wide variety of plants. It can also be manmade and added to products. When if comes to caffeine, all coffees are not created equal.