State officials who lead California's war on global warming often travel abroad on trips supported by the major greenhouse gas polluters they regulate, a Bee investigation has found. Industry lobbyists and executives routinely join them. Since 2006, more than two dozen top state officials have fanned out across the globe on such trips, bound for a climate change policy tour in Europe, meetings with high-level government officials across South America and China, even a safari in Kruger National Park in South Africa – all on someone else's dime. They have logged more than 700,000 air miles and touched down in...