Agence France-Presse: Climate change could more than triple the risk of catastrophic wildfires in parts of Australia, a top environmental group warned Thursday, almost a year since savage firestorms that killed 173 people. Greenpeace warned that, without a new climate treaty to replace the Kyoto Protocol, the frequency of severe fire danger in drought-parched southeastern Australia would grow threefold by 2050. “Catastrophic” conditions similar to those ahead of February’s so-called “Black Saturday” …