Jeff Corwin is a scientist and writer. He does these jobs with one life goal help save animals and their habitats. His latest book, 100 Heartbeats:  The Race to Save Earth's Most Endangered Species. Is a collection of stories about animals on the edge of _ . Corwin recently talked to a reporter. Reporter: How would you describe your job? Corwin: My job is to travel around, look at animals and tell their stories. Reporter : When did you know this is what your wanted to do? Corwin:  I knew that when I was 6 years old. My dad was a police officer, and we lived in the city. I really enjoyed the time when I could go to the quiet countryside. One day I saw my very first wild snake and I knew that's what I would do for the rest of my life. I didn't know if I would be a teacher or a zookeeper, but I knew I would have a life connected with nature. Reporter: Why did you write the book? Corwin: We are losing species very fast. _ If we make big changes, we may have the chance to save what remains. Reporter: Is it true that humans are the reason that many of these animals are in danger? Corwin: Human beings have a powerful effect on every other living thing. It's important to make that effect a positive one. ,. Jeff's life goal is to   _  .
protect the environment do some scientific research save animals and their habitats. Let more people know about nature.