Other unconventional liquid hydrocarbons include production from oil sands, ultra-heavy oils, gas-to-liquids technologies, coal-to-liquids technologies, biofuel technologies, and shale oil.Unconventional natural gas can be of several types.ther unconventional liquid hydrocarbons include production from oil sands, ultra-heavy oils, gas-to-liquids technologies, coal-to-liquids technologies, biofuel technologies, and shale oil.
Unlike standard headphones, which use relatively large drivers (speakers) and fit on top of or around your ears, or earbuds, which use fairly small drivers and sit loosely in your outer ears, in-ear-canal headphones use very small drivers and actually fit inside your ear canals (thus the name canalphones).
Photo by Erica Joy. Earbuds and in-ear headphones are tiny earpieces that go inside your ears. You're probably familiar with these, as cheaper earbuds often come with music players (like the iPod). Earbuds generally sit in the bowls of your ears, while in-ear variants actually go in the ear canal, some fairly deeply.