Manure from about 1,000 cows goes in one end and then, controlled decomposition yields methane gas at the other.

VOA: standard.2010.02.23

"What we've done is the oil and gas have been leaking out through the end of the riser.

VOA: standard.2010.05.17

Nigeria plans to offer inhabitants of the Niger Delta an extra 10 percent in oil and gas revenues in a bid to end the rebellion.

VOA: standard.2009.12.21

"There is a realization at the end of the day that despite all the profits that Russia got from its sale of oil and gas over the last 10 years, that unless it modernizes its economy and reforms it, it will be a declining power."

VOA: standard.2010.06.18