Earth is in the scientific "danger zone" for all environmental measures by air pollution, according to a new study. If the planet got an annual check-up like a person, scientists say Earth is "really quite sick right now." Only air pollution wasn't quite at the danger point globally. About two-thirds of Earth don't meet the criteria for freshwater safety, scientists said as an example. "We are in a danger zone for most of the Earth system boundaries," said study co-author Kristie Ebi, a professor of climate and public health at the University of Washington.

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Persons: U.S . West —, Kristie Ebi, Joyeeta Gupta, It's, Johan Rockstrom, Indy Burke, Rockstrom, Gupta, Chris Field, Lynn Goldman, George Washington Organizations: Service, Earth, U.S, University of Washington, Earth Commission, University of Amsterdam, Potsdam Institute, Climate, Research, Yale School of, Environment, Stanford Locations: guardrails, Eastern Europe, South Asia, East, Southeast Asia, Africa, Brazil, Mexico, China, U.S . West, Germany, Paris