December 12 marked a global day of action where tens of thousands of activists raised their voices to the ears of negotiators who are in the midst of climate talks. Circle of Blue goes behind the scenes of Greenpeace's preparations for the massive rally that claimed the streets of Copenhagen Saturday.

EPA Chief says the agency has been fighting to make up for lost time on its climate change policies. A U.S. Environmental Protection Agency ruling that greenhouse gases pose a public health threat has set the stage for new emission regulations while setting off a battle in Congress and howls of protest from industry groups.

In an ongoing effort to understand the connections between water resources, water systems, and international security and conflict, the Pacific Institute initiated a project in the late 1980s to track and categorize events related to water and conflict.

Human waste is a cheap energy source for Thames Water, which is in a price dispute with the UK’s water regulator. Thames Water, the largest water provider in the United Kingdom, saved £15 million (US$25 million) last year by using human feces as a source of renewable energy.