Edie: The UN conference is bringing together about 9,000 people from more than 200 nations Major international talks have begun in Poland to try to secure agreement on how nations will tackle the threat of climate change. The two-week UN climate change conference in Poznan, which began on Monday, is picking up where Bali left off (see related story) to try to negotiate a successor to the Kyoto Protocol. Nations will use the time to try to firm up a policy approach before a final deal …