Rescuers search Hudson for survivors after small plane, helicopter collide -
Police: Helicopter, small plane collide over Hudson River -
Ashton Kutcher #aplusk & Demi Moore tweet following emergency landing at Las Vegas airport. -
Two American journalists, detained in North Korea since March, were reuinited with their families early Wednesday.
Iranian President Mahmoud Ahmadinejad takes the oath of office for a second term -