New York Mayor Zohran Mamdani announced on Tuesday the release of tens of thousands of documents showing the city did not disclose all it knew about air toxicity after September 11. The release comes ahead of the 25th anniversary of the attacks in 2001 that killed 2,977 people, in the US, mostly in the collapse of the Twin Towers in New York. More than 9,400 have died from illnesses linked to their exposure to the area in the years since, according to a federal medical monitoring...