Yet researchers from Stanford University say new treatments are often no better than existing ones, but are almost always more costly.

VOA: special.2009.08.14

Yet his greatest influence may have come from popularizing a song that he himself did not write.

VOA: special.2009.07.27

Yet,it took some time for the team to confirm that the amino acid glycine came from space.

VOA: special.2009.09.30

People can't afford them. That's why we don't really have a malaria vaccine yet, because no one in rich countries really suffers from malaria.

VOA: special.2010.03.29

Yet he could not laugh. He felt small agaist the comb shining from the old man.

VOA: special.2010.05.08

They did not yet understand that they were seeing the problem from the opposite direction.

VOA: special.2009.04.21

As of Tuesday officials had not yet announced a change from phase five.

VOA: special.2009.06.10

Carolyn McKecuen says the numbers from this year's event are not final yet.

VOA: special.2010.04.30

Yet much of the news that people get online still comes from newspapers.

VOA: special.2009.03.21

Yet it is not as peaceful as it seems from a distance.

VOA: special.2010.09.08

Yet,Darwin theorized in a world much different from the one we know.

VOA: special.2009.02.25

Yet some small banks have already paid back aid from the government.

VOA: special.2009.04.17

Yet,the recession did not keep people from attending the festival.

VOA: special.2009.08.05

Yet,he also demanded excellence from other black Americans.

VOA: special.2009.11.01