A gas is a state of matter, the others being solids and liquids. Gases are distinguished from the other states by the amount of energy the constituent molecules have. With gases the molecules making up the gas have virtually completely free movement...

A physical state of matter that has low density and viscosity, can expand and contract greatly in response to changes in temperature and pressure, and readily and uniformly distributes itself throughout any...

Gas is one of the four major states of matter, consisting of freely moving atoms or molecules without a definite shape and without a definite volume. Compared to the solid and liquid states of matter a gas has lower density and a lower viscosity. The...

Gas prices fell overnight, ending more than a week of steady advances, and gasoline futures plunged on news that refineries and a pipeline were returning to service quickly after unexpected problems.Oil, meanwhile, rose above $74 a barrel on concerns about the closure of a North...

The passion that burns in Laurie With isn't visible until she gets behind the wheel of her Honda Civic hybrid _ and drives real slow.She accelerates gently when the light turns green, and coasts down hills to save gas. On highways, she stays in the...

stumping both for and against congestion pricing in the same day? Last week, he said he was genuinely on the fence about the issue. On Tuesday of this week, he met with the eight other board members of his group, which represents 7,200 bodegas in...

Russia's natural gas monopoly warned Belarus on Thursday against siphoning gas from the main pipeline across its territory if the company goes ahead with a threatened Jan. 1 supply cutoff.Minsk responded by repeating its threat to disrupt deliveries of Russian gas destined for Europe if...