Andrew C Revkin Tom Zeller Jr New York Times News Service

Two mock gateways set up by environmental campaigners - a fiery red one symbolizing the perils of climate change and a green one representing an international climate accord to address it - greeted delegates on Monday as they filed into a conference center here.

Two mock gateways set up by environmental campaigners - a fiery red one symbolizing the perils of climate change and a green one representing an international climate accord to address it - greeted delegates on Monday as they filed into a conference center here.