1.   Now, however, a new phenomenon was noticed.

2.   Across the border in Brownsville, Texas, a strange medical phenomenon first was noticed about the time Miguel Angel was born.

3.   Leahy said he has never noticed the phenomena before.

4.   Lexicographers have noticed this phenomenon.

5.   Musicians have been noticing the phenomenon.

6.   The novelist Erica Jong has noticed this phenomenon as well.

7.   Watching tapes of the New York disaster, he said he noticed another phenomenon seen during controlled demolitions.

8.   You may have noticed this phenomenon in various situations.