In a sense, the expanding use of live donors is a vast scientific and social experiment.

This is a vast environmental experiment whose consequences may not be known for decades or even centuries.

Both undertook vast experiments in collective and communal farming, converting their countries to a planned economy.

So this will be a vast experiment.

"Why subject our seniors to a vast social experiment?"

They were the controls in the vast experiment that was Imperial humanity.

The parts of the world that participated in this vast experiment in classic economic theory were greatly transformed.

As a result, medical experts say, men taking the drug are participating in a vast, uncontrolled medical experiment.

What is happening in Greece right now is a vast social experiment.

One of the unlikely new offerings in this vast experiment is online gym.