Biology is about the nature of life and living organisms. By studying biology we can satisfy much of the curiosity we have about the world we live in, and the connections we humans make with other organisms with whom we share this earth. Biologists ask, and try to answer, questions about the diversity of life and about the common characteristics of living organisms from molecules to entire ecosystems. To accomplish this, some biologists study organisms in their habitats; others work in laboratories to examine life on the cell and molecular level. Biologists study the history of life through fossils and use bioinformatics to determine evolutionary relationships based on DNA sequences. Ecologists use computer modeling to evaluate critical environmental issues. The study of biology encompasses so much that it’s almost impossible to not be a biologist!