The article says "The most frightening thing is that this finding isn't about what will come if we do not act, but that our effects on the planet's environment -- global warming, population growth, and overall resource extraction -- means that we've already passed a "tipping point." This isn't a plea for change. These are things scientists have been warning us about for decades."
But the video says simply that there could be a tipping point so there should be policy before the tip.
Also the NYT blog http://green.blogs.nytimes.com/2012/06/06/are-we-nearing-a-planetary-boundary/
says "could be nearing a point "
Getting news from bloggers can be like playing telephone. Always try to access their original source because, well, there's nothing like planning your day with second hand information.
And just when I thought I didn't have to worry about retirement....