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The article isn't talking about speed though, its about distance: "point of no return".
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I was making a general point about climate change, which is that human activity has made natural processes occur quicker than our ability to adapt to them. London going under six metres of water over 20000 years, fine (that's 0.3mm per year), 20 years, not so fine (that's a foot per year).
I do detect that you're (hopefully unconsciously) adopting the US administration's faith-based 'scientists can't agree therefore it isn't happening' argument, which is nonsensical. It's happening, but predicting what happens when you change a relatively steady state this quickly is extremely hard for a proper scientist let alone a science-shy administration with a vested interest in the status quo and a habit of ignoring obvious facts.
I trust scientists with access to the facts on this one, and will be reading the September 2005 report when it comes out to make my own mind up. If you wait for every scientist to agree before you trust something you wouldn't get on an aeroplane for one thing (since there's still a lot of debate about exactly why a plane can fly).