NUMBER 5 - DAVID LETTERMAN TO RETIRE
Late night television host David Letterman plans to retire next year, when his current contract expires. He announced Thursday his plan to leave during a taping of "The Late Show." The studio audience reportedly gave him a standing ovation after his announcement. CBS has declined to comment. Letterman has hosted "The Late Show" since 1993.
NUMBER 4 - MISSOURI FLOODING
Another reminder of why motorists should never drive through a flooded road. A couple was rescued from their flooded-vehicle after it became stuck in rising waters in Missouri Thursday evening. School buses were forced to change routes as water covered a number of streets in the area. But good news is in the forecast for the Show Me State, Friday will be mostly sunny with a high near 52 degrees.
NUMBER 3 - EARTHQUAKE AFTERSHOCK
Many people in northern Chile were still without water or power Thursday in the wake of an aftershock from Wednesday's earthquake. More than 2,500 homes were seriously damaged. CCTV reports aftershocks damaged supply systems, leaving about half of the region's urban area in the dark. As of Thursday, 80 percent one city's power grid was affected and the supply of drinking water was almost completely disrupted.
NUMBER 2 - LIQUID NICOTINE POISONING
Health officials are reporting a surge in the number of liquid nicotine poisonings from e-cigarettes, and children are particularly at risk. A CDC report reveals that calls to poison control centers about e-cigarettes have shot up from about one per month as of September 2010 - to approximately 215 per month as of this February. E-cigarettes are not required to be childproof and with flavors like spearmint, banana and bubble gum, they can be appealing to kids.
NUMBER 1 - FORT HOOD SHOOTER
We're learning more about the soldier who opened fire at the Fort Hood Military Base in Texas Wednesday. Army Specialist Ivan Lopez, 34, was an Iraq War veteran who received treatment for depression and anxiety, and was undergoing evaluation for PTSD. Authorities say he took his own handgun onto the military base, killed three people and wounded 16 others, before taking his own life.