evidence: Crude oil. Often portrayed as the coagulated thick black liquid that spurts from the ground at oil rigs. Gloppy and unrefined straight from the earth. The oil man's black gold. [...] Gasoline and diesel fuel to power our transport. Heating oil to warm our homes. And other petroleum products such as naphta, waxes, and lubricating oils that ultimately become a part of almost every product we produce and consume. [...] Oil is present in almost every single part of our lives from the transport and production of food, clothing, materials, pharmaceuticals, and the plastics used to make a whole plethora of products. The impact of how drastic this change may be will depend heavily on the rate of decline and the development and adoption of oil alternatives.