natural disasters like floods and droughts are forcing tens of millions around the world to flee their homes. that's creating a threat to u.s. national security. one report recommends adding climate change as a basis for granting refugees status. tonight a warning from the c.d.c. a salmonella linked to onions imported from mexico has sickened more than 650 people in at least 37 states and nearly 130 people have had to be treated in hospitals. businesses have been ordered to stop selling onions from chihuahua, mexico attributed by pro source, incorporated. if you have them at home, please throw them out. a marine in arizona is being hailed as a hero for stopping an armed robbery at a gas station. surveillance video shows three suspects entering a store, one pointing a gun at the cashier while the marine wastes no time disarming the robber within second rktsz the hero told deputies, the marine corps told