Where in the sentence should the writer add a hyphen? I spend about-half my time, he spends two thirds of his time, and she spends a quarter, or maybe a third, of her time on research.
I spend about half my time, he spends two-thirds of his time, and she spends a quarter, or maybe a third, of her time on research.
I spend about half my time, he spends two thirds of his time, and she spends a quarter, or maybe a-third, of her time on research.
I spend about half my time, he spends two thirds of his time, and she spends a quarter, or maybe-a-third, of her time on research.

the second sentence, because fractions like "two-thirds" or "three-fourths" are always hyphened.  "a quarter till two", "a third", and things like that don't need to be hyphened. :)

i will have to go with 1.

hope this !

journalism is the gathering, organizing, and distribution of news -- to include feature stories and commentary -- through the wide variety of print and non-print media outlets. it is not a recent phenomenon, by any means; the earliest reference to a journalistic product comes from rome circa 59 b.c., when news was recorded in a circular called the acta diurna. it enjoyed daily publication and was hung strategically throughout the city for all to read, or for those who were able to read.