Keeping track of our changing environment: From Rio to Rio+20.

The environmental changes that have swept the planet over the last twenty years are spotlighted in a new compilation of statistical data by the UN Environment Programme (UNEP). The report is produced as part of UNEP's "Global Environmental Outlook-5" (GEO -5) series, the UN's most authoritative assessment of the state, trends and outlook of the global environment. The full GEO-5 report will be launched next May, one month ahead of the Rio+20 Conference taking place in Brazil.