[Free Registration/Login may be required to access all resource tools.] Students will explore ways to study the past to learn about the history of life. Understand how fossils, DNA analysis, and molecular clock help researchers study...

Interview with Molecular Biologist Rob DeSalle provides insights into his research interests, his career preparation, and a range of biology-related topics.

[Free Registration/Login may be required to access all resource tools.] This comprehensive lesson by CK-12 explains how scientists learn about the past by examining and dating fossils.

With developments in molecular biology, biologists have powerful new tools to determine the relatedness of specimens found at different locations. Studies of chromosomes and gene sequences have helped identify Cockrum's Gray Shrew and...