By mid-century, the world can build a zero-carbon electricity system as broader changes to the global energy system are needed, writes Ajay Mathur.

Plans by about 150 countries to curb greenhouse gas emissions will slow climate change this century and keep alive a goal of limiting a rise in temperatures to two degrees Celsius (3.6 Fahrenheit), the United Nations said.

As their homes are burned in the search for resources, indigenous communities in the world’s tropical forests are calling on the United Nations to come to their aid, reports Bruce Babbitt

The deal reached at the UN climate-change conference in Peru ends the longstanding division of the world into only two kinds of countries, developed and developing, writes Michael Jacobs