Scott Cherba is a geologist, educator, scientific illustrator, and large format photographer based in Tucson. For more than 30 years he has specialized in the geology and natural history of southwest North America from the Colorado Plateau to the Gulf of California. His clients have included non-profit organizations, universities, government agencies, NGOs, and museums worldwide. Most recently, he spent several seasons as a geoscientist and park ranger on Grand Canyon's North Rim. He teaches high school math and science, helps Lisa with mid-level science, and leads music and rock band classes. Visit him online at cherba.com or write him at firstname.lastname@example.org.