Mister Page was a wealthy man who became very interested in the scientific work being done at the tar pits.

VOA: special.2010.04.07

It describes in detail the huge amount of work involved in carefully examining the many layers of tar and earth.

VOA: special.2010.04.07

They would make turpentine from tar and get the black, sticky tar on the heels of their feet.

VOA: special.2009.08.16

Many years later, settlers used the tar,or asphalt, on the tops of their houses to keep water out.

VOA: special.2010.04.07

It is still happening today. Small birds and animals still become trapped in the La Brea Tar Pits.

VOA: special.2010.04.07

They would make turpentine from tar and get the black,sticky tar on the heels of their feet.

VOA: special.2011.01.16

America's National Cancer Institute has said that people who smoke low-tar cigarettes do not reduce their risk of getting diseases linked to smoking.

VOA: special.2010.03.09

The proposed Keystone XL pipeline would carry heavier crude oil produced from tar sands in Canada.

VOA: special.2011.07.08

Scientists have recovered more than one million fossil bones from the La Brea Tar Pits.

VOA: special.2010.04.07

So,twenty-three huge containers of tar,clay and mud were removed from the area for research.

VOA: special.2010.04.07

Today,the La Brea Tar Pits are known to scientists around the world.

VOA: special.2010.04.07

Some smokers believe that cigarettes with low tar levels are safer.

VOA: special.2010.03.09

But most people know it as the La Brea Tar Pits.

VOA: special.2010.04.07

Scientists have fully examined only several boxes of earth and tar.

VOA: special.2010.04.07

Tar is a substance produced when tobacco leaves are burned.

VOA: special.2010.03.09

Researchers place a big block of tar into the machine.

VOA: special.2010.04.07

the Spanish words for "the tar."

VOA: special.2010.04.07

North Carolina is the Tar Heel State.

VOA: special.2009.08.16

Another source of concern: the discovery of 20 tar balls off Key West,Florida on Monday.

VOA: standard.2010.05.18

"We think that for the South Florida parks, Dry Tortugas,Big Cypress, Everglades and Biscayne, it is predominately going to be a tar ball event because the oil is weathering."

VOA: standard.2010.05.26

And,he said, tar balls are less toxic.

VOA: standard.2010.05.26

But the sight of workers wearing white protective suits and gloves hauling in tons of oil-contaminated waste - including bags of sandy tar balls, vegetation,used oil booms, rags and other clean-up supplies - has caused alarm among some Gulf coast communities.

VOA: standard.2010.08.05