Jeff Larson is a reporter at ProPublica. He is a winner of the Livingston Award for the 2011 series Redistricting: How Powerful Interests are Drawing You Out of a Vote. Jeff's public key.
Explore the great migration of African Americans from 1940 to 2000 and segregation in Northern cities.
Behind the scenes on our great migration graphic.
Mystery solved. Syria had requested to ferry attack helicopters from Russia over Iraq, but the flights hadn't happened. Now, the Iraqis say they denied permission.
Documents show that Syria asked Iraqiauthorities to grant air access to fly in refurbished attack helicopters fromRussia, putting a spotlight on Iraq’s role in the nearly two-year conflict.
Hackers with the online group Anonymous posted new documents giving Syria’s version of how Turkey impounded a Syrian Arab Airlines passenger jet last month. The documents could not be authenticated.
The records of overflight requests show more than 200 tons of "bank notes" from Moscow to Damascus.
A couple of weeks ago, in an article about the science behind the Message Machine project, we mentioned the custom key-value store we built to store non-relational data. Today, we're open sourcing the library which we're calling Daybreak.
Political campaigns use massive databases to target their constituents. ProPublica's Message Machine is beginning to find some answers on how they do it.
How the message machine works.
The political conventions are upon us, and with them a new flood of campaign emails. ProPublica debuts a new campaign emails Tumblr.
Today we're opening up the political campaign emails we have collected from our readers.
On Saturday the Obama campaign sent an email to supporters mentioning Sheldon Adelson, the billionaire casino mogul who has donated millions to Republican super PACs.
Last Monday, the Obama campaign sent out an email about a dinner with the President at Sarah Jessica Parker's house this coming Thursday. We received 7 versions of it.
With the help of hydraulic fracturing, energy companies have doubled North Dakota's oil production in the past two years. But the oil boom has come at a cost: these companies are spilling and leaking oil and wastewater at an increasing rate.
Political campaigns are using increasingly sophisticated methods to target messages to voters, methods that are not at all transparent. We need your help to uncover and understand them.
Today, we're releasing Ruby bindings for Simple Tiles, so you can generate tiles from Ruby.
How different are a campaign's emails to different voters? President Obama's re-election campaign tried at least six different messages sent on behalf of campaign deputy manager Julianna Smoot in an email blast last week.
Campaigns are increasingly tailoring their messages -- and their funding requests -- using massive databases of personal information about potential voters. Here are six variations of a Thursday night message from the Obama campaign, based on emails submitted by 190 recipients across the country.