Something may look valuable, but may not really be valuable.

VOA: special.2009.08.30

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

But in return,Heller's surfing adventure helped him learn a valuable lesson about catching the perfect wave in life.

VOA: standard.2010.08.04