The water, oil and gas from a well often contains radon.

This has had the side effect that the oil contains much less erucic acid.

The pumped oil contained 20% water in 1965, and by 1994 it was 92% water.

The essential oils are mostly pure and contain little to no foreign substances.

Many natural oils contain valuable ingredients that not only keep us healthy but also improve our skin.

The seeds contain very low levels of opiates, and the oil extracted from them contains even less.

Folks say that the burnt oil of this traditional lamp contains medicinal value.

Olive oil does contain heart-healthy fats, which are associated with lower blood cholesterol levels.

The higher the level of polyunsaturated fat that an oil contains, the faster it spoils.

He said the oil contained no hazardous material.