They drill down to the shale, then go sideways and inject high-pressure water, sand or other material into the rock.

VOA: special.2009.10.23

Water from high in the mountains falls in many places to the green valley far below.

VOA: special.2009.01.07

Some plants' pores can tighten to save water during conditions of high carbon dioxide.

VOA: special.2010.01.26

High levels of domoic acid in the sardines may have worsened the effects of oxygen loss in the water as the fish crowded into a limited space.

VOA: special.2011.03.15

It was built high above the water on a rocky cliff.

VOA: special.2009.11.19

"The flame from the jug of water was this high," "and that's what my kids and our family have been drinking."

VOA: standard.2010.01.02

Bobo Simbo stands thigh-high in a pool of orange water, sifting the mud for traces of gold dust.

VOA: standard.2010.04.22

He said the water was as high as four meters. Indonesian authorities say torrential rains were too much for the Dutch colonial era dam.

VOA: standard.2009.03.27

In a two-sentence letter Monday, North Korea said it had ordered the release on an "emergency" basis because water levels behind the dam had risen too high.

VOA: standard.2009.09.09

With the force of a giant waterfall, the dam burst,launching a wall of water 18 meters high down the funnel toward Johnstown faster than warnings could be sounded.

VOA: standard.2010.04.26

Both subjects are high priority for Seoul. Six South Koreans drowned last month when the North suddenly released water from a dam, flooding camping areas in the South.

VOA: standard.2009.10.13