And,for farmers, a more valuable dollar meant lower prices for crops.

VOA: special.2010.06.24

But Borges says as preserving the forests becomes more valuable, conflicts could arise over who owns the rights to the carbon credits.

VOA: standard.2009.12.17

Walking is safe. And,it is said be to as valuable for one's health as more intense forms of exercise like jogging.

VOA: special.2010.06.08