The world has entered a “new danger zone” with levels of Earth-warming carbon dioxide in the atmosphere never experienced by humankind, the United Nations (U.N.) climate chief warned on Monday.

The planet has set a significant – and unwelcome - landmark with the concentration of heat-trapping carbon dioxide in the atmosphere passing 400 parts per million (ppm) for the first time in more t

The amount of climate-warming carbon dioxide in the atmosphere topped 400 parts per million at a key observing station in Hawaii for the first time since measurement began in 1958, the National Oce

Industrialized nations' greenhouse gas emissions dipped 0.7 percent in 2011, helped by a U.S.

Environment activist SubhasDatta has moved the National Green Tribunal on pollution at Puri, eastern India's biggest pilgrimage and tourist site.

Anthropogenic US greenhouse gas emissions (GHG) amounted to a CO2-equivalent 6,702.3 million metric tons in 2011, down 1.6 percent from 2010 and 6.9 percent below 2005 levels.

Renewable technologies & greater efforts by emerging economies among few bright spots

The International Energy Agency (IEA) on Wednesday said the drive to clean up the world’s energy system had stalled. IEA Executive Director Maria van der Hoeven told the 23-member Clean Energy Ministerial despite much talk by world leaders and a boom in renewable energy through the last decade, the average unit of energy produced on Wednesday was “as dirty as it was 20 years ago”.