"Combine a weather event and environmental irresponsibility and the sum equals a tragedy, " said Carlos Minc, Rio de Janeiro's environment minister.

CNN: STORY HIGHLIGHTS

Coordinated by the Reef Environmental Education Foundation, the event takes place each year during the first two weeks of July in coastal waters throughout the United States.

CNN: Counting fish adds up for marine protection

Depending on the point of view, zombies may result from an act of God, the irresponsible use of science, an environmental disaster, a cosmic event and so forth.

CNN: Apocalypse believers' big finish predictions vary

Combining theatre, music, historical reconstructions, and traditional oral and written tales, the Ramman is a multiform cultural event that reflects the environmental, spiritual and cultural concept of the community, recounting its founding myths and strengthening its sense of self-worth.

UNESCO: Culture

They said it was to explain the financial, economic and environmental implications of HS2 but their critics saw it as more akin to a campaigning event staged at public expense.

BBC: HS2 spells double trouble in next week's council poll

In an era of heightened environmental awareness, any incident, even involving a single water well, can become a national event.

WSJ: Daniel Yergin on the Shale Gas Revolution: Stepping on the Gas

The event saw more than 200 corporate and academic supply chain management experts discuss how to bring environmental sustainability and social responsibility to the key business issue.

CNN: Bridging commerce and research