The world's forests act as massive sponges, sucking carbon from the atmosphere. Above, an aerial photo from 2009 shows massive deforestation in the Brazilian state of Para.
Antonio Scorza/AFP/Getty Images
Day laborer Yohanni Castillo from Honduras waits for work outside a Lowes home improvement store in New Orleans. Jobs are drying up, he says, and he hasn't worked in four days. Even when work does comes along, he says, he doesn't always get paid.
The Maker Station is a 50-foot trailer in the parking lot of the Allen County Public Library in Fort Wayne, Ind. It's a hackerspace where do-it-yourselfers share tools and expertise.
Novelist Anita Desai is a professor of humanities at the Massachusetts Institute of Technology. She has also written Journey to Ithaca, Village by the Sea and Clear Light of Day.
Jerry Bauer/Houghton Mifflin Harcourt
A Krampus roams the streets during a "Krampuslauf" near Merano, Italy, last weekend. People around America are also taking up the European Alpine folklore tradition, dressing like the creature who steals naughty children around Christmastime.
Johannes Simon/Getty Images