Salon.com
You'll be required to watch an ad to get full access to the site.
The New Yorker
It's a magazine that mixes style and substance, but if you're looking for news, the Fact
section is pretty good, and features Seymour Hersh (the reporter who first broke
the stories on the My Lai Masacre in Vietnam and the torture scandals of recent
years).
There are mainstream, liberal and conservative publications represented here, and some have all at once.
It's up to you to discern positions and conclusions based on either fact or assumption.