During the past half century, we learned we share a fragile biosphere. Our view of life on Earth, whether through a microscope or from a space station, is colored by the knowledge that everyday human activities can threaten our future.
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.
