Seattle's 'Emerald City' from space: How glaciers and people shaped its landscape

NASA satellite imagery shows Seattle's landscape shaped by ancient glaciers and human engineering.

Glaciers during the last Ice Age carved Seattle's hills, valleys, and lakes.

Human projects later flattened hills, filled tidal flats, and altered waterways.

Seattle's nickname 'Emerald City' comes from its evergreen forests visible from space.

The city's development is closely tied to its waterways including Puget Sound, Lake Washington, and Lake Union.