CNN's Deborah Feyerick details new reports that bomb residue was found in Tamerlan Tsarnaev's apartment.

CNN's Dana Bash looks at the fight by former Rep. Gabby Giffords to sway NRA members on background checks.

Liz Norden will be on The Situation Room tonight to talk about her families' harrowing experience on Marathon Monday. Both of her sons lost their right legs and have been under numerous operations in separate hospitals.

If you would like to donate to their benefit fund, please send to JP and Paul Norden Benefit Fund, Stoneham Bank 80 Montvale Ave., Stoneham, Massachusetts 02180

A video purportedly showing a 747 crash may offer clues to what happened. This video may be graphic for some viewers.

CNN's Paul Vercammen is in the middle of a California neighborhood that is keeping its eye on an approaching wildfire.

President Obama says the U.S. will continue to work with Mexico to fight the drug war and organized crime.

Police are investigating whether Filipino women removed from a Saudi diplomat's home are victims of human trafficking.

Watch a crane hoist a spire to the top of the new World Trade Center. CNN's Jeanne Moos reports on the 104-floor journey.

The families of gun violence victims confront lawmakers in gun control push. CNN's Dana Bash reports.

Chris Lawrence looks into what caused a 747 plane crash, which was purportedly recorded by a nearby vehicle's dash cam.