A one-way ticket to Mars

February 18, 2015 A one way ticket to Mars 2/17/15 09:05PM Chris Hayes talks to a NASA engineer who's among the 100 finalists selected by Mars One to compete for the chance to help establish a permanent colony on Mars. read story Latest Stories Gov. Scott Walker vs. Higher Ed 2/17/15 09:20PM What are the political calculations behind Gov. Scott Walker taking on Wisconsin's beloved university system. read story Who needs a college degree? 2/17/15 09:30PM Wisconsin Governor and potential 2016 presidential hopeful Scott Walker did not finish college. Chris Hayes asks: How much does a college degree matter, anyway? read story Texas judge blocks Obama on immigration 2/17/15 08:45PM A Bush-appointed federal judge in Texas is, at least temporarily, blocking a program that would protect millions of people from deportation. read story More News Train carrying crude oil explodes in WV 2/17/15 08:50PM 'The Washington Generals of activism' 2/17/15 09:15PM Tonight on All In - February 17th, 2015 2/17/15 08:15PM