Scientists Warn Humans Are, Pushing Earth Outside , 'Safe Operating Space'.br According to scientists, several key indicators of br planetary health show that human actions br have pushed Earth into a danger zone.br 29 scientists from eight countries br analyzed "planetary boundaries," br which ensure a stable and livable Earth.br CNN reports that the scientists br warned that humans threaten to trigger br dramatic changes in Earth's climate.br The "planetary boundaries" researchers looked br at include biodiversity, freshwater use and br the impact of synthetic chemicals.br According to the report, published in the journal br 'Science Advances,' human actions have breached six of these br thresholds, pushing the Earth outside "safe operating space.".br On the bright side, the ozone layer is on track br to recover completely, thanks to international br efforts to limit the use of ozone-depleting chemicals.br According to Simon Lewis, a professor of global change science br at University College London in the U.K., the report comes as, "a strikingly gloomy update br on an already alarming picture.".br Humans are destroying biodiversity, br changing the climate and polluting br our home to such an extent that br we’ve pushed our planet out of br the stable conditions that enabled br human civilizations to emerge, Simon Lewis, professor of global change science br at University College London in the U.K., via CNN.br It couldn’t be a more stark warning, Simon Lewis, professor of global change science br at University College London in the U.K., via CNN.br According to Andrew Fanning, a visiting research fellow at the University of Leeds in the U.K., the report provides "strong evidence-based support" for taking action.