Independent: Al Gore, the former US vice-president and winner of the Nobel Peace Prize for his work on the dangers of climate change, called on the world yesterday to focus more on global warming and less on celebrities, in particular, O J Simpson, Paris Hilton and Anna Nicole Smith. He named the jailed ex-All American football player, the attention-seeking hotel heiress and the late sex symbol to thousands of delegates at the UN climate conference at Poznan in Poland, as distractions from the …