San Diego Union-Tribune: Al Gore, former vice president of the United States and winner of the Nobel Peace Prize, visited Tijuana on Thursday to talk about climate change at the Innovadora conference at the city’s culture center. Here is a five minute audio clip from his speech. Gore is talking about the impact of world population growth on climate change. We know that this is a controversial issue, and an emotional one for many people. Don’t hesitate to say what’s on your mind but please keep things …