ClimateDesk: Japan used to have a pretty good reputation on climate change. Thanks to its robust industrial economy, it has the fourth-largest carbon footprint in the G20 nations. But it gets a sizable chunk of its power from zero-carbon sources like hydro dams and, at least until the 2011 disaster at Fukushima, nuclear plants. And in 2009, the country agreed, along with the other G8 nations, to reduce its carbon emissions 80 percent by 2050.
Back in 1992, Japan played host to the negotiations that led to...