He tested the free-diving self-propelled submersible - one of only two in existence at the time - on increasingly deep dives off the California coast.

VOA: standard.2010.06.21

The OIC undertaking is ambitious, it involves not just rebuilding, but in many cases building for the first time the infrastructure that could make Darfur self-sustaining.

VOA: standard.2010.03.21

The six nations will allow companies to self-certify where goods come from so they no longer have to spend time and money going though export authorities.

VOA: standard.2009.11.09