People -- all they are and all they do.

Cities

4 photos
Cities

Energy

2 photos
Energy

Food

2 photos
Food

People

3 photos
People

People at Work

1 photos
People at Work

Recreation, non-nature

4 photos
Recreation, non-nature

Rural Areas, & Food Production

10 photos
Rural Areas, & Food Production

Travel & Transportation

12 photos
Travel & Transportation