I found that this interconnection between the manmade and the natural world was most powerful.

VOA: standard.2009.12.15

Most of the electricity Americans use is produced by coal,natural gas, or nuclear generation.

VOA: standard.2010.03.23

It's home to some of the most ancient Christian monasteries, and its natural caves or 'hermitages,' were used as shelters and burial grounds going back more than 10,000 years.

VOA: standard.2010.08.05

But the decision to hold most of the exercise in Kitgum has raised questions as to whether Natural Fire 10 is part of preparations for a renewed military effort against the Ugandan rebel group, the Lord's Resistance Army.

VOA: standard.2009.10.20