TEMPERATURES: The average annual global temperature has increased 0.58 degrees Fahrenheit (0.32 degrees Celsius) since 1992 based on 10-year running averages, according to the U.S. National Oceanic and Atmospheric Administration. Every year since 1992 has been warmer than the year of the original Rio conference.
POLLUTION: Global levels of the chief heat-trapping gas, carbon dioxide, climbed 10 percent from nearly 358 parts per million in April 1992 to 394 ppm this past April, NOAA said.
DISASTERS: Since 1992, natural disasters have affected 4.4 billion people worldwide, killed 1.3 million people, and cost $2 trillion in damages, according to the United Nations. Earthquakes, storms, extreme temperatures and floods were the biggest killers.
FORESTS: Since 1990, the world's primary forest areas have decreased about 740 million acres (300 million hectares), according to the United Nations. That's an area larger than Argentina.