Tamra Orr Books
Polar bears
By Tamra Orr
Looks at polar bears and how they survive in the wild, raise their cubs, and are related to other species.
Read MoreThe undersea world
By Tamra Orr
Though explorers have been searching Earth's deepest waters for many years, experts estimate that we have explored only about five percent of the global ocean. Readers will learn about the history...
Read MoreAntibiotics
By Tamra Orr
Many of the world's most dangerous illnesses are caused by tiny living things called bacteria. Bacterial sicknesses once killed countless people. However, thanks to drugs called antibiotics, many t...
Read More