The phenomenon has been known for at least a century.

The phenomenon has long been known in animals and plants.

The area is a good example of the suburban phenomenon known as an edge city.

It is also one of the most deadly natural phenomena known to man.

This can be best explained by first looking at the phenomenon known as ring time.

And many others have become part of a phenomenon known as "middle income melt."

In other words they are empowered by the social phenomenon known as 'the art world'.

This phenomenon, known as regulatory capture, has a long history.

It is similar to the American phenomenon known as hazing.

They led the phenomenon known in Mexico as the "northern invasion".