ProPublica

ProPublica publishes at propublica.org. ProPublica. Alto monitors its public feed continuously and currently holds 193 stories from this publisher, most recently on September 14, 2026.

Over the span Alto has been indexing, ProPublica has published roughly a story a day. Every headline below links to ProPublica's own report — Alto aggregates and adds context but does not republish the reporting, and the views expressed are the publisher's. How Alto collects and ranks stories.