# High School Earth Science/Authors
## John Benner

John A. Benner has an M.A. in chemistry from The University of Texas at Austin. He has worked as an analytical chemist, a science editor and content consultant, and a freelance writer. His past projects include chemistry, physics, and physical science textbooks for Holt, Rinehart and Winston and several titles in the True Books series for Children's Press. John's work for CK-12 is his first contribution to open-access publishing. He currently works as a computer programmer in Austin, Texas.

## David Bethel

David Bethel has been a lifelong student of science, mathematics, and philosophy. He completed the "Great Books" program at St. John's College in Santa Fe, NM, in 1995. He has also studied physics, astronomy, biology, math, and the history and philosophy of science at Brown University and the University of Texas at Austin.

## Dana Desonie

Dana Desonie's set of eight books on environmental issues entitled "Our Fragile Planet" has just been released by Chelsea House. Booklist named "Oceans: How We Use the Seas" as one of the top ten environmental books for youth for 2007! Besides environmental science, Dana also writes and edits in the fields of geology, oceanography, and biology. With a doctorate in oceanography and a trip to the bottom of the ocean in the research submersible Alvin under her belt, she now lives in the Sonoran Desert with her neuroscientist husband and their two children.

## Craig Freudenrich

Craig Freudenrich, Ph.D., is a freelance science writer. He earned a B.A. in biology from West Virginia University and a Ph.D. in physiology from the University of Pittsburgh School of Medicine. He has over 25 years experience in biomedical research, science education, and science writing.

## Mary Lusk

Mary Lusk is an Environmental Science instructor at Southwest Florida College in Tampa, Florida. She also works as a freelance science education writer and especially enjoys writing about Earth Science. She has college degrees in Geology and Soil Science, and in her free time she likes collect rocks and minerals, garden, and spend time with her husband and 3 little boys.

## Erik Ong

Erik Ong is from the San Francisco Bay Area. He has worked in San Ysidro Middle School on the California-Mexico border for ten years as a school counselor and a teacher of algebra and science. He believes in giving all students access to the teaching standards while building vital social skills as well. He was selected as Teacher of the Year for the San Ysidro School District during the 2007-2008 school year.

## Kurt Rosenkrantz

Kurt Rosenkrantz is a curriculum specialist at a website specializing in interactive science and math simulations. He spent eight years teaching middle school and high school science in California and New York. He has a bachelor's degree in Earth Science from Harvard and a master's degree in Geology from the University of Cincinnati (specializing in invertebrate paleontology). He grew up in Vermont and currently resides in Chapel Hill, North Carolina.

## Julie Sandeen

Julie Sandeen is currently a high school teacher at Woodstock Academy in Connecticut and Adjunct Faculty at Eastern Connecticut State University. She is passionate about Earth Science and loves sharing that joy with her students. She received her Master's degree in Geology from the University of Connecticut and did her undergraduate work at Smith College in Northampton, Massachusetts.