Scientists from about 140 countries have completed a guide for policy makers worldwide on measures to curb global climate change caused by human activity.
Participants in a conference, sponsored by the Nobel-Peace Prize winning group The International Panel on Climate Change, warned that global warming is getting worse and could become irreversible. They say resulting heat waves, droughts and tropical cyclones could lead to severe water and food shortages.
Delegates ironed out the provisional agreement on climate-change policies during their meeting in the Spanish city of Valencia. The document, based on scientific research from all over the world, requires governments to enact policies aimed at curbing greenhouse emissions.
It will be submitted for approval to environment ministers meeting next month in Bali, Indonesia.
The Bali meeting is to focus on a strategy for deeper cuts in greenhouse gas emissions after 2012, when the Kyoto Protocol, expires.