It must be buried under a mountain, sunk to the bottom of the sea, or placed under a thick layer of salt deep under a desert for instance.
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Methane is the principal component of natural gas, and massive amounts of it are trapped in reservoirs beneath the sea floor and under a layer of the ice-like substance.
There, hiding under a layer of salt as thick as 15, 000 feet, Chevron found the Tahiti field, which now produces 125, 000 barrels per day from reservoirs 25, 000 feet deep.
The scientists examined two Martian meteorites that formed in the planet's mantle, the layer under the crust.
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Temperatures as low as -23C (-9F) and heavy snowfall this month have left the capital Kiev and most of the country under a thick frozen layer.
The problem was that (gas) was locked in shale, the extremely dense layer of rock under Dallas and Forth Worth.
It was fascinating to see the images building up until we could see an actual photograph of the layer of fat under his skin and around his organs.
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He experienced firsthand the impact of humanity on the environment when under the hole in the ozone layer at the South Pole, the harsh ultraviolet rays from the sun burned his skin and permanently changed the color of his eyes.
The wafers use an insulation layer that acts as a radiator under the circuits.
Their Sailfish OS is still under development, but has an Android Compatibility Layer that should answer one of the concerns of a new platform, but it still ties them to Google.
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The boldest silent acting always burrowed under the outlines of the story and added a layer of commentary, sometimes a dissonant layer.
CFCs are banned under the Montreal Protocol on Substances that Deplete the Ozone Layer.
In MS, the protective sheath or layer around nerves, called myelin, comes under attack which, in turn, leaves the nerves open to damage.
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Both models also sport dual-layer backlit keyboards, with a snazzy red tone peeking out from under the black chiclet-style keys.
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But during the trial Astra brought in a drug-delivery expert from the University of Nottingham who analyzed Andrx's pellets under a microscope with infrared and ultraviolet light and concluded they contain a third layer after all, thus infringing Astra's patents.
Under the glare of electric lights, I saw that the porcelain was coated with a layer of dust, the silverware dulled by tarnish.
The Super Multi-Layer Coating reduces flare and ghosting, ensuring sharp, high contrast image quality even under severe conditions such as taking photos against or towards the sun.
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For the deepest layer, the hypodermis, he is looking at taking fat from the abdomen and injecting under the healing wound.
Under the scheme, meat for export must be prepared separately, in dedicated plants with yet another layer of inspections and checks, including the need to guarantee the mother of any stock slaughtered was alive six months after it was born.
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