World greenhouse gas emissions

1431 × 1400

United Countries of Baseball

1280 × 960

US Fluoridated Water Coverage 2000

3304 × 2552

U.S. population density map

1650 × 1276

world map with data points

1024 × 600

Wal-Mart Store Coverage Map

3300 × 2550

Climate change protest on beach

1566 × 1600

Economic Freedom of the World

2695 × 1815

A Texan's Map of the United States

1200 × 768

Estimated Temperatures at 3 Kilometers

3360 × 2098

United States of America control emblem

1200 × 960

Human Impact on Earth

1125 × 1150

Piracy Helps Stop Global Warming

1280 × 800

an inconvenient truth

1200 × 960

an inconvenient truth

1200 × 960

an inconvenient truth

1200 × 960

an inconvenient truth

1200 × 960

1854 North American territorial map

1156 × 1356

Internet Connection Density Map

2000 × 828

Economic Freedom Distribution Map

3975 × 2846