Does the human body evolve as quickly as human culture? With a stellar 15-minute video, explore the trait of lactose intolerance. Only about 1/3 of human adults seem to still have the enzyme lactase and therefore, the ability to digest...

The fascinating topic of human skin color is examined in this article from Muse magazine. It highlights a study done by a pair of scientists on the relationships among strength of sunlight, vitamins, and melanin in the skin. The results...

Investigate the theories of human evolution. In this research based lesson, learners research and discuss how geographic isolation, interbreeding, generalization, and specialization are factors in the history of humans. Groups work...

Around the world, about 2/3 of adult humans are lactose intolerant. Scholars work in small groups to discuss a few statements about lactose intolerance. Then, they watch a video on the topic and readdress each statement. Whole-class...

Many physicals include a blood glucose test, but what are doctors actually testing? Scholars graph and interpret blood glucose data, allowing them to observe the differences in lactase persistence and draw conclusions. They then connect...

Bacteria get more resistant to antibiotics every year. Learn the reason for this pattern and how scientists are addressing the problem in a six-week unit. Learners analyze different types of bacteria and their adaptations.