These sources have minimal bias and use very few loaded words (wording that attempts to influence an audience by using appeal to emotion or stereotypes).  The reporting is factual and usually sourced.  These are the most credible media sources. See all Least Biased Sources.

Factual Reporting: HIGH

Notes: Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals. The NBER is the nation’s leading nonprofit economic research organization. Twenty-six Nobel Prize winners in Economics and thirteen past chairs of the President’s Council of Economic Advisers have held NBER affiliations. It is very important to note that the research papers produced by NBER are working papers and are not peer reviewed. In other words, the research is open to discussion and criticism. Some papers may contain bias and some could in fact be wrong. We give this source a least biased rating because the economists who are affiliated with the group come from all political affiliations. We give them a high factual reporting rating based on these papers being working papers and not stated as definitive fact. (D. Van Zandt 3/23/2017)

Source: http://www.nber.org/