That's a great source of energy; it can also be a liability.

It was obvious, then, that they had some extraordinary source of energy.

The majority of people still use firewood as their major source of energy.

Gas will be the largest source of energy in coming years.

Caffeine also raises blood-sugar levels, providing a source of energy for working muscles.

Madam, - Our country is blessed with a unique, renewable source of energy.

New Zealand's coast is an unpredictable and relentless source of energy.

A finite number of spells against a near-limitless source of energy?

This gave them access to a virtually infinite source of energy.

The sun is the great source of energy in almost all terrestrial phenomena.

We can readily trace the source of energy in mechanical devices.

They contain alcohol, which is both a source of energy and a drug.

Soulfire used my own life force as its source of energy.

As a drug, caffeine seems like an effective source of energy.

Carbohydrates serve as the main source of energy in diets fed to pigs.

Nuclear technology is both a source of energy and a potential means of annihilation.