The changes follow the launch of a crowdsourcing effort earlier this month by US news and investigative website ProPublica to collect political advertising from Facebook. ProPublica's Julia Angwin reports.

The first results in a US-wide effort to better measure the levels of contaminants released through the burning of munitions and their waste show elevated levels of lead, arsenic and other toxins. Abrahm Lustgarten of US investigative website ProPublica reports.

Internal talking points from Donald Trump’s spy chief reveal tensions between Trump and the intelligence community, reports US investigative website ProPublica.

A new federal survey on hate crimes in the United States offers cause for both alarm and confusion, reports US investigative website ProPublica.

The top science panel in the United States has just sketched a clearer way to set a fair price today for cutting tomorrow’s climate risks. But as Andrew Revkin of US investigative website ProPublica says, some of Donald Trump’s advisers say the price should be zero.

The recent devastating monster storms that were Hurricane Harvey and Hurricane Irma also whipped up a number of falsehoods. US news and investigative website ProPublica talked with Jane Lytvynenko, a reporter with weathered experience of trying to hold on to the facts.

Donald Trump’s supporters crowed when leaked pages of his 2005 return showed he paid a hefty amount of taxes. But the returns for the following years, which remain secret, likely include some hefty refunds of that payment, reports US website ProPublica in this investigation co-published with The Washington Post.

Texas is scheduled to release Genene Jones, a former nurse and suspected serial killer of children, early next year. Now, prosecutors in San Antonio have moved to prevent her release, bringing a new murder charge against Jones in connection with the death of a child 35 years ago. US investigative website ProPublica reports on the chilling and disturbing tale of the woman dubbed 'the Angel of Death'.

Cloudflare, a prominent San Francisco outfit, provides services to neo-Nazi sites like The Daily Stormer, including giving them personal information on people who complain about their content, reveals US investigative website ProPublica. 

Amazon bills itself as “Earth’s most customer-centric company”, but this report by US investigative website ProPublica found that its algorithm is hiding the best deal from many customers.