Leaders face big challenges at the 2012 climate conference

Polish photographer captures early morning mist and fog rolling through the trees

Mexican-American artist recycles trash into neatly arranged installations at Guggenheim Museum

Sumptuous nighttime photos of forests and stars

Road-happy photographer captures some seriously superb images from around the globe

Moody analog beauty from the Lithuanian photographer

Photographers capture leaf color gradients in all their autumnal beauty

South African photographer documents fires in Johannesburg parks

Digitally manipulated photos deal with the limits of human experience