1.   But do not put the drain directly into the sanitary sewer line, because this could cause sewer gases to come into the basement.

2.   Gas only comes every other day and electricity is an on-and-off affair.

3.   Greenhouse gases come mostly from burning fossil fuels, like coal and oil, and one of the best ways to reduce their emission is to save energy.

4.   That incident horrified people all over Japan, but it was never clear exactly where the gas came from.

5.   The gas probably comes from deep within Earth, and may be a relic of the dawn of our solar system more than four billion years ago.

6.   The gas will come from North Sea fields owned by five companies.

7.   This gas is coming from production facilities and pipelines recently installed on fields discovered some time ago, he explained.

8.   Where exactly does this gas come from?

9.   Without the weight of the water above to contain it, the gas comes out of solution, like the bubbles that emerge when a seltzer bottle is opened.

10.   Without the water in the trap, smelly sewer gases would come up through your sink drains, making your house unlivable.