He was a sort of natural force, like the wind.

He saw the Earth as the product of natural forces.

He thought the Earth must have developed by slow, natural forces.

Natural forces are blind, and their power is beyond our control.

But who will govern the use of the power to control natural forces?

Changes in climate may be due to natural forces or from human activities.

An ice age can be a result of a nuclear winter or natural forces.

This wasn't the result of any earthquake or natural force.

Such outlines could not have been the result of natural forces.

It did not result from natural forces of the market or geography.

However, the impact of the state was felt through natural forces, and it varied over time.

From now on the first rule of engineering would be to work with Earth's natural forces, never against them.

Mechanics help explain how the natural forces of nature work.

Natural forces and the nature of the tree itself are integral to his art.

It might be the result of some irrational natural force.

I can do the same by using natural force, this way."

It was unlikely, he believed, that the world would be done in by natural forces.

The second line of defense against terrorists, after natural forces, is a good communications system.

Science is merely an understanding and an application of the way natural forces work.

Only natural forces can postpone the game or end it early.

Delivery commitments were, her father had once said, a natural force.

"But no matter what we do, natural forces are going to make that really tough very soon.

They were as much a natural force as the river.

He wanted people to understand the human needs and natural forces that were working on the landscape."

Lightning was a simple natural force, and it wasn't too hard to entertain her.