A U.S.-sponsored contest is prompting creative solutions to global challenges that can benefit the developed and the developing world.
China and the United States signed a 10-year framework agreement to make electricity and transportation cleaner and more efficient and to reduce pollution in water, air, forests and wetlands.
This disorder is blamed for a 31 percent drop in U.S. honeybee colonies during 2007.
Learn more: International Pollinator Conference Highlights Importance of Bees.
Two specimens on loan from a marine preservation organization in Spain were transported by the U.S. military to Washington.
Learn more: Smithsonian Institution Opens New Ocean Exhibit Hall
The endangered leatherback turtle can grow to 2 meters long, weigh 900 kilos and live 50 years.
Learn more: Threats to Marine Turtle Raise International Concern
This list of key environmental treaties shows how nations are working together, politically and scientifically, to safeguard our planet and respond to a global threat. The United States, whose pollution control laws serve as models for other nations, remains a leader in identifying, mitigating and remediating environmental hazards.
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