At the rate things are going, the Earth in the coming decades could cease to be a "safe operating space" for human beings.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/human-activity-has-pushed-earth-beyond-four-nine-planetary-boundaries-scientists-warn
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/age-australia
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiversity
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/deforestation
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ozone-layer
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cfcs
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases