Officials say at least 68 people are dead and more than 50 are injured after two high-speed trains collided in Spain, marking the second fatal accident on the same rail line in less than a year. NBC News’ Matt Bodner reports on the latest developments, including what investigators believe caused the crash and the hotline set up to assist victims’ families. For more context and news coverage of the most important stories of our day, click here: nbcnews.com Every day, NBC News helps people understand what’s happening and why it matters — through fact-based reporting, meaningful conversations, and powerful stories. From its leading news broadcasts — TODAY, NBC Nightly News, Meet the Press, and Dateline — to NBC News NOW, the 24/7 streaming news channel, plus chart-topping podcasts, the NBC News app, and NBCNews.com, NBC News keeps audiences informed and connected to the stories shaping our world. NBC News. Reporting for America. » Subscribe to NBC News: nbcnews.to...