Web portals and local TV newcasts are the most frequently used news sources among the U.S. audience between age 18 and 34, according to the Carnegie Corporation.

Over 70 percent of the respondents said they watch local TV newcasts at least once a week, while about 62 percent said they use web portals as their news source at least on a weekly basis.

About half of the young adults still read newspapers at least once per week.

Local TV station websites, cable TV non-news networks and news talk programs, however, are the least used news sources, with over 30 percent of respondents saying they never used them.