He argued that babies know better than anyone about when and how much they need to eat.

VOA: special.2009.03.15

But here is something that scientists now know: A team led by Professor Fu has reported the first genetic link to how much sleep we need.

VOA: special.2009.08.26

But states decide how much students need to know to show "proficiency."

VOA: special.2010.03.18

It's the contrast between stress and no stress. The question becomes, well,how much stress do you need to have before you lower the stress?,".

VOA: standard.2009.04.17

"In the Philippines and all over Asia, fertilizer has been overused and misused because no one explains to them how much they need or how to use it."

VOA: standard.2010.07.28

The researchers say if people want to avoid heart disease, they should be more aware of how much sugar is in their food, and reduce it,if need be.

VOA: standard.2010.04.25