Earth's surface is beautiful and wondrously complex. Almost every one of us lives on landscapes, working, playing, hiking, climbing and lately, taking snapshots.

Click. Look, a waterfall. Click. There's a flood. Click. Towering mountains.

We'll use 150 years of photographs to examine our planet and understand how it works, learning landscapes from the human perspective. Come in and join us on this virtual trip across Earth's amazing surface.