Beautiful nature photos feature people in lieu of animals.

Alex MacLean goes airborne to document the complex relationship between humans and nature.

Dangling cameras from kites, Dutch photographer Gerco de Ruijter blurs the boundary between landscape and abstraction.

Contenders for the 2011 Prix Pictet, the world's leading prize for environmental photography, to exhibit in Paris next month.

Photos by Alexander Gronsky.

Stephen Mallon chronicles the repurposing of NYC subway cars.

A photographer goes skyward to capture "industrial scars."