But forty years later, "Sesame Street" is the longest running children's television program in the United States.

VOA: special.2009.11.27

Today,the research program at Gombe represents one of the longest continuous wildlife studies in the world.

VOA: special.2009.11.18

A lot of people feel uneasy about spending after the longest recession since World War Two.

VOA: special.2009.08.21

Its creators said it is the longest chemically designed DNA structure ever produced in a laboratory.

VOA: special.2010.07.20

That is the longest period in United States history that the flag has remained unchanged.

VOA: special.2010.04.02

"Atlas Shrugged" is more than one thousand pages, one of the longest novels ever written.

VOA: special.2010.06.06

The many pins take the shape of one of the longest rivers in the world.

VOA: special.2009.05.06

The longest inaugural address on record was given by William Henry Harrison in 1841.

VOA: special.2009.01.19

Today,the Golden Gate Bridge is the ninth longest suspension bridge in the world.

VOA: special.2010.07.23

Sometimes we'd have that whole river to ourselves for the longest time...

VOA: special.2010.03.21

Today the war is the second longest in American history, after Vietnam.

VOA: special.2009.10.10

At the time, it was the longest suspension bridge in the world.

VOA: special.2009.03.04

Mister Kennedy was one of the nation's longest-serving and most respected senators.

VOA: special.2010.01.02

It was the longest strike and boycott in United States labor history.

VOA: special.2009.09.06

And the longest repayment period will be shortened from twenty-five years.

VOA: special.2010.04.15

Still,he went on to become the third longest serving senator ever.

VOA: special.2009.08.29

He was one of its longest-serving and most influential members.

VOA: special.2009.09.13