She says that raising animals for food is responsible for the release of more greenhouse gases than all forms of transportation combined.

VOA: special.2009.11.06

Don Hillebrand is the director of transportation research at the Energy Department's Argonne National Laboratory near Chicago,Illinois.

VOA: special.2010.11.17

This week,travel back in time to explore the history of transportation in the United States.

VOA: special.2010.01.11

Some people had enough money to ride on the newest form of transportation: the airplane.

VOA: special.2010.01.11

Camels have served as an important form of transportation since ancient times.

VOA: special.2009.01.13

One was the high cost of transportation.

VOA: special.2010.06.10

(Speaking) Institute director Eric Leonhardt says he's had his eye on the dairy herd as a source of transportation fuel for a long time.

VOA: standard.2010.02.23

Ray LaHood, Secretary of the U.S.Department of Transportation, says distracted driving is a critical problem.

VOA: standard.2010.06.24

"Passenger trains are the safest form of transportation available with the exception of the elevator.

VOA: standard.2010.02.15

Only half the trains in the U.S. can travel up to 170 kilometers per hour, but American trains are about to change, according to U.S.Secretary of Transportation Ray LaHood.

VOA: standard.2010.02.15

Alan Clark is the region's director of Transportation Planning.

VOA: standard.2010.07.26

"From our side we will often bring our leaders of transportation, of ticketing,of athlete experience, to make sure that as corporate spokes-people we're supplementing what we can say with people who are truly in the weeds on these subjects every day."

VOA: standard.2010.02.25

In a decision in eighteen seventy-six, the Supreme Court said states had a legal right to control costs of railroad transportation.

VOA: special.2010.04.15

Mining of coal and logging of the forests became major industries as transportation improved on the rivers and railroads were built.

VOA: special.2009.07.20

It stars John Travolta as the leader of the hijackers and Denzel Washington as the transportation employee who negotiates with him.

VOA: special.2009.06.12

has a transportation exhibition that explores the connection to the economic, social and cultural development of the United States.

VOA: special.2010.01.11

And if that is not fast enough, then people can drive to another part of the modern transportation system: the airport.

VOA: special.2010.04.26

University of Michigan transportation researcher Bruce Belzowski says one big question is what effect employee morale will have.

VOA: special.2009.06.05