Associated Press: Citing green hotels, coconut oil fuel for airlines and even recyclable golf tees, executives in one of the world’s largest industries say they are urgently trying to shrink tourism’s oversized environmental footprint. But with global travel projected to keep soaring, and those very leaders still eager to expand their own ventures, some doubt such efforts can significantly lessen global warming and other ecological woes. "There are no simple solutions," Anna Pollack, head of a …