Complex sentence: "None of it was really real," he said in an interview, but the situation has changed dramatically since that time according to Dowling, whose group collects and disseminates data on the shifting mountain lion population.
Split into simpler sentences: None of it was really real, he said in an interview. But the situation has changed dramatically since that time according to Dowling, whose group collects and disseminates data on the shifting mountain lion population.