One world. One climate. One chance. This is the tagline of onclimate.net, the news portal that provides live, interactive coverage of the United Nations Conference on Climate Change taking place in Cancun from Nov. 29 to Dec. 10.Cancun, a high-end coastal resort area in Mexico, endeavors to pick up the pieces after the collapse of the 2009 conference in Copenhagen, which was then billed as “the last chance to save the planet”. More than 100 heads of government converged in the Danish capital. They had the huge hope they would ink an agreement for legally binding deep cuts in carbon gas emissions to manage global warming. In failure and frustration, they could not reach consensus for a mandatory scheme to reduce emissions of carbon dioxide and other greenhouse gases that come from fossil-fuel driven industry and motor vehicles, as well as from deforestation and land use. Now in Cancun...