Agence France-Presse: The head of the UN’s panel of climate-change experts said on Friday he was encouraged by climate pledges at last week’s G8 summit but warned commitments still fell short of what was required by science. Rajendra Pachauri, chairman of the Nobel-winning Intergovernmental Panel on Climate Change (IPCC), told AFP the outcome of the L’Aquila talks was "a bit of a dichotomy." "On the one hand, the G8 leaders have agreed to this so-called aspirational goal of reducing (greenhouse-gas) …