A plane carrying former President Bill Clinton had to make an emergency landing in Tanzania Wednesday after one of the four engines on his plane stopped working, CBS News has learned. Everyone on board the plane is safe. Clinton was traveling in the East African nation to visit projects that have been funded by his family's foundation. The plane made an emergency landing at the Dodoma fueling station, where the engine had to be fixed. The plane was a Canadian turboprop Dash 7, traveling from Iranga, a city in the center of Tanzania, to Lake Manyara, which is in the...