New Horizons, a spacecraft bound for Pluto, will embark on historic mission. After traveling 3 billion miles across the space system, this might be the closest a man-made object has come to the dwarf planet. Matt Sampson has the details.
Celebrities Tweet Their Support for the National School Walkout On Wednesday, thousands of students across the country walked out of their schools to protest gun violence. Many celebrities took notice and shared their support on social media.