Greg Biffle killed in plane crash; Maurice DuBois and John Dickerson sign off from the "CBS Evening News."...

Officials say the same gunman who opened fire at Brown University also killed an MIT professor two days later. Here's what we know about the suspect, who was found dead Thursday night....

The Seattle Seahawks were on fire in the fourth quarter as they utilized the 2-point conversion to help them win the game over the Los Angeles Rams....