UN Warns of Irreversible Damage to Planet

United Nations report says the world faces irreversible change to life support functions if humanity does not change its ways. The United Nations Environment Program (UNEP) issued the report ahead the U.N. Conference on Sustainable Development, set for Brazil at the end of June.

The Global Environmental Outlook, or GEO5, says the world is on an unsustainable path, despite more than 500 international agreements. And scientific evidence says Earth's systems are being pushed toward their limits.