AEONS ago, the colliding plates of the earth buckled in the area now called Montana, sending great fins and towers of rock soaring into the air and trapping pockets of natural gas underneath.
The device has several connected channels, each of which has a trapping pocket used to capture single cells in precise locations.
No one knows for sure, but one UN official estimates that 100,000 camels, cows and their herders are trapped in pockets near the towns of Kutum and Kabkabiyah.
For instance, if water at a glacier's base is trapped in pockets, some parts of the glacier or ice stream might speed up rather than slow down.
Salt dissolves in the hot sludge, turning it to brine, and the brine gets trapped in pockets that then act like wetlands, absorbing organic matter and toxic metals, including beryllium, which is then incorporated into growing crystals of aluminum silicate.
Fracking, which has shown the greatest potential in Garrett and Allegany counties, involves injecting water, sand and chemicals deep into the ground at high pressure to fracture rock formations, thereby releasing natural gas trapped in pockets in the rock.
Many Muslims have fled to Chad, Cameroon or the Democratic Republic of the Congo, but some 15,000 are trapped in pockets in the capital and north-west of the country, where they have taken refuge in churches or mosques.
You've heard talk of walls, chromium in our water, and children trapped in pockets of vast misfortune, suffering in incomprehensible ways.
Formed by melting snow during the Ice Age, the lake gradually evaporated, leaving a rich concentration of minerals in brine trapped in pockets beneath the surface.
They found that molecules of nitrogen and carbon dioxide are able to diffuse from the liquid through the walls of the fibres into the air pockets trapped inside them, causing those pockets of air to expand.
