Studies have shown that over time, most humans need eight to eight and a half hours of sleep for the best health.

VOA: special.2009.08.26

Most people at that time thought it was not important for young women to learn anything more than to read and write.

VOA: special.2010.04.25

Today,Miz Goodall spends most of her time traveling around the world speaking about wildlife protection and working to build support for her foundation.

VOA: special.2009.11.18

Kristen Iversen says Denver's most conservative social club did exclude them for a time.

VOA: special.2010.03.08

Clark sees traffic congestion as one of the most serious problems of our time - for a variety of reasons.

VOA: standard.2010.07.26

It has kept the NLD leader, Aung San Suu Kyi,locked up for most of the time since.

VOA: standard.2009.09.24

But for many women, most hours are already filled with a full-time job and raising a family.

VOA: standard.2010.03.30

Terribly dynamic and largely a very young group of players who are going to be competing in the Olympics most of them for the first time,"

VOA: standard.2010.01.12

They have kept her locked up for most of the time since.

VOA: standard.2009.11.02

Since the space was small and climate-controlled, staffers allowed only small groups in for a few minutes at a time, which was enough to cure most people's olfactory curiosity.

VOA: standard.2010.07.30

Even though the recession has forced a drop in the amount it costs to buy commercials in the big game for just the second time in history, they are still the most expensive on television.

VOA: standard.2010.01.27

Clinton said the United States continues to demand the unconditional release of the Nobel Peace laureate, who has been detained most of the time since 1990, when her National League for Democracy party won national elections but was barred by the military from taking power.

VOA: standard.2009.11.12