Is Earth past the tipping point?

A new video from the University of Minnesota's Institute on the Environment asks the question: Is Earth past the tipping point?

This follows a report published in Nature last year by 28 scientists who pointed out that Earth has ten separate biophysical systems that can define a "safe planetary operating space". Three of these biosphere systems have already suffered lasting, irreversible damage by human activity including biodiversity, the nitrogen cycle and the climate system.