About one quarter of the oil consumed in this country is used for industrial purposes. Plastic production is the most obvious example, as awareness grows of the harm plastic does to the earth and people shun the material when they can.

But oil has permeated more of our lives than most people realize. Here, the most surprising places you’ll find oil, in some form, as a key ingredient:

1. Chewing gum

It lasts as long as it does for a reason–just about all brands on store shelves today use petroleum-based polymers. (Unless you find, say, Chicza’s organic rainforest gum, but I haven’t seen it at any 7-Eleven lately.) In fact, Goodyear–the tire and rubber company–supplies Wrigley’s with much of its gum base.

In a separate article from this, I read this:

Up until WWII, chewing gum was made of a substance called chicle mixed with flavorings. Chicle is a latex sap that comes from the sapodilla tree (native to Central America). In other words, chicle is a form of rubber. Just like rubber bands don't dissolve when you chew them, neither does chicle. Chicle is a good bit softer than rubber bands and happens to soften more when it gets warm in your mouth. If you freeze chicle with ice, it gets very stiff -- chicle hardens and softens over a pretty narrow temperature range.

After WWII, chemists learned how to make artificial gum bases to replace chicle. These gum bases are essentially synthetic rubbers that have the same temperature profile as chicle.

Gum bases (either natural or artificial) are mixed with sugar and other flavorings to make chewing gum. When you chew it, the rubber releases these flavorings into your mouth. ­

2. Hair dye

As if the toxic chemicals in hair dye weren’t enough reason to avoid coloring your hair. Try finding more natural alternatives, or just go au naturale.

3. Asphalt

Also known as bitumen, the material used to resurface roads (as well as in roofing materials) is an oil-based hydrocarbon. Meaning: if you noticed that road construction slowed down in your area at all in the last year, rising oil costs may well have been the reason.

4. Crayons

The main ingredient is paraffin wax, a petroleum product also used in most candles.

5. Ink

Ever wonder why so many companies with an eco-conscience tout their use of soy-based ink?

6. Pantyhose

…and all other nylon products. All petroleum-based.

7, 8, 9, 10…Ok, there’s going to be more than 10 items on this list

Heart Valves. Pillows. Aspirin. Ammonia. Toothpaste. Toothbrushes. Guitar strings. Shoe polish. Tape. Rubbing Alcohol. Vitamin capsules. Solvents. Caulking. Insecticides. Deodorant. Glue.

The wax layer of the packaging your frozen food comes in. (And, of course, the fertilizers that farmers used to grow much of that food.)

Given the ubiquity of oil, it’s not an easy thing to get away from, no matter how much bike-riding and food-growing we do for ourselves. (Though both of things are a great start…keep ‘em up!) But, like other addictions, we got ourselves hooked, and with serious effort and dedication, we can get ourselves unhooked.