Crude oil increased nearly 2 percent, to a 13-year high.

In the last two years, by contrast, more expensive oil increased the current account deficit by $10 billion a year.

Some oils increase the skin's sensitivity to sunlight.

Another concern is that burning coal and oil would increase the danger of acid rain.

The oil is readily absorbed through the skin and may increase heart rate, cause convulsions or rarely death.

Celeron's oil and gas will increase the reserves of Exxon by more than 100 million barrels, or about 2 percent.

This is only true up to a certain point, the increased interaction between soap, water, and oil does not increase further after a certain point.

Linseed oil, for instance, increases in weight by 17 percent.

Although no new major discoveries have been announced and no new capacity was expected to be produced before 2010, oil production increased in 2008.

In fact, over the last five years oil has increased in Ireland by over 300%.