These proving grounds have a long history, dating back the better part of a century.

What can you learn from a one-minute phone call to an Army proving ground?

Public defenders have proved fertile ground for film, literature, and other media.

They were given to the museums, sold to other countries or used for target practice on proving grounds.

But either way, the requirement to prove grounds for divorce can contribute to the costs.

Meager as it was, this was the first place she'd hit in hours that wasn't a government proving ground.

For Corretja, it was a test and proving ground.

Later, some tanks were given to military supply depots and proving grounds.

So, where exactly are these proving grounds and what do the automakers do there?

This summer has proved unusually fertile ground for new shows; two might reasonably be labeled hits.