They are hoping to learn more about dark matter in an effort to better understand how the universe expands and shrinks.

VOA: special.2009.07.21

The family carries the body through flood and fire in an effort to get her body to Jefferson to be buried.

VOA: special.2010.01.10

Doctor Spock said his work was an effort to help parents trust their own natural abilities in caring for their children.

VOA: special.2009.03.15

It combines a tax cut for employers and spending for road projects in an effort to reduce unemployment.

VOA: special.2010.02.27

President Reagan met with Soviet Leader Mikhail Gorbachev several times in an effort to reduce nuclear weapons.

VOA: special.2011.02.06

This park was established in nineteen twenty-six in an effort to protect the wildlife of South Africa.

VOA: special.2009.08.19

One of the showerheads was cleaned with a bleach solution in an effort to destroy the bacteria.

VOA: special.2009.10.13

Miz Teutonico's team will study materials used in the paintings in an effort to solve the mystery.

VOA: special.2009.12.15

in the form of tax cuts. That provision is partly an effort to gain support from Republicans.

VOA: special.2009.01.09

He urged other nations to join in an effort to free the world of nuclear weapons.

VOA: special.2009.04.11

Over the past four years he traveled around the world with recording equipment and video cameras in an effort to unite people through music.

VOA: special.2009.07.31

Workers are drilling two relief wells in an effort to ease pressure on the damaged well.

VOA: special.2010.06.04

He also says he is making an effort to use this saying in his life.

VOA: special.2009.03.01

This was it. What could be an impossible effort in the history of spaceflight was ready to lift off on its final chance for success.

VOA: special.2009.07.01

In nineteen ninety-five, he was part of an effort to recover the Fitzgerald's bell.

VOA: special.2009.11.11

They wanted to seize the territory and Fort Union in an effort to find paths to the Pacific Ocean and to the gold fields of Colorado.

VOA: special.2009.03.30

The three men had often worked like this in an effort to find gold.

VOA: special.2009.02.04

So,in an effort to unite the party, Stephen Douglas offered to withdraw.

VOA: special.2009.05.07