Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/pbs-newshour-full-episode-may-13-2015 Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Wednesday on the News Hour... Wednesday on the NewsHour, officials investigate an Amtrak deadly train derailment in Philadelphia. Also: Lawmakers debate what’s next for trade with Asia, researching how biology influences gender identity at an early age and a new book of poetry from one of the NewsHour’s own. Listen to the Broadcast Subscribe to the Full Show Podcast Segments From This Episode Is gender identity biologically hard-wired? 10 min Why was a speed control system not installed at site of the train disaster? 6 min Jeffrey Brown translates his reporting life into a new book of poetry 8 min Sen. Warren: If Obama is confident about trade deal, he should make details public 6 min Trade bill is one of the most important in U.S. history, says Sen. Hatch 7 min News Wrap: Saudi leaders visit White House 6 min Scene of train crash beyond a disaster movie, says Philadelphia mayor 5 min Derailed train was going twice the speed limit, says NTSB 4 min