Brooklyn-based artist/photographer envisions a post-apocalyptic world

Designers Jason Klimoski and Lesley Chang transform discarded containers into fluffy clouds

Land art installation features a trench lined with colorful crosscut logs

Leaders face big challenges at the 2012 climate conference

Scientists are developing a "subway tampon" to halt underground flooding

Sustainable food advocate and author Cathy Erway dishes out some winning sides for holiday eating

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