Any child vaccinated would, in effect, be part of a large human experiment.

They planned to conduct a large experiment into the effect of environment on health.

Researchers say the Rices' 130-acre planting is one of the largest experiments they have seen.

Until we have a large, controlled experiment in the city, probably the case will not be persuasive enough.

It's arguably the largest scientific experiment ever created by humans.

In the end, the luxury-tax system is a large and quirky experiment.

It is often difficult to determine the relative importance of these factors without rather large experiments.

Did you know that the world's largest experiment is run by a Welshman?

This is currently being tested in a larger experiment.

It is all part of the largest educational experiment with private management ever undertaken by an American school district.