When I began working in Liberia right after the Accra settlement ended Liberia’s civil war in 2003, I could not help worrying about whether the peace would last. Burnt-out cars lined the streets of Monrovia, bullet holes scarred many of its buildings and the wary U.N. peacekeepers manning checkpoints behind sandbags and barbed wire reinforced the sense that violence could flare up again at any time.

Rice is a thirsty crop. Yet for the past three years, Alberto Mejia has been trying to reduce the amount of water he uses for irrigation on his 1,100-acre farm near Ibague in the tropical, central range of the Colombian Andes.

From the mountains and foothills of the Himalayas to the Terai plains, climate change is rapidly changing life in Nepal. Many communities however, are not strangers to environmental stress; for decades, rapid population growth alongside agriculture and fuelwood collection have degraded land and diminished forests. [Video Below]

BANGWEULU WETLANDS, Zambia – Out here on the endless swamps, a harsh truth has been passed down from generation to generation: There is no fear but the fear of hunger.

When I began my term as a public policy scholar at the Wilson Center last year working on the project “Science and the Media,” I ran into a journalist colleague I hadn’t seen in years. When he heard what I was doing, he said in astonishment, “Science? How did you get interested in that?”

“We don’t know the reason for the death of fish in downstream villages,” Hamberton Nongtdu, a mine owner from the northeastern Indian state of Meghalaya, told me.

Despite some critics, the recent U.S.-China agreement over carbon emissions has sparked remarkable optimism in global climate negotiations. It’s also opened the door to new bilateral engagement between the U.S. and Chinese environmental communities on other issues, including China’s massive air pollution problems (16 of the world’s 20 most polluted cities are in China).