A teenager discovers that an exchange student is not as sophisticated and cultured as he assumed.

Alexander's conquests heralded an era where previously unconnected cultures mixed on a large scale. Trace the diffusion of foodstuffs over vast trade networks in the Hellenistic period. Study early dietary regimens based in Galen's famous theory of the body's "humors," and the influence on food culture of philosophical schools such as the Stoics and Epicureans.

The Nelsons receive two new foreign exchange students in their home, but a chain of murders begins happening.

What were the costs and benefits of the Mongol conquests? Is it accurate to say that a pax Mongolica - a Mongol peace - was imposed in the sedentary civilizations that came under their control? Analyze these consequences, looking at the toll of Mongol destruction and the transformative cultural exchange and prosperity that arose.

Explore how the misleading dichotomy of "Old World" and "New World" has impacted perceptions of Native Americans for decades. Delve into the "Columbian Exchange," which is the crux behind the creation of "new worlds for all" and learn about the enduring ramifications these processes had in shaping everything from the fauna and flora to the cuisines of the world.

Alexander's conquests heralded an era where previously unconnected cultures mixed on a large scale. Trace the diffusion of foodstuffs over vast trade networks in the Hellenistic period. Study early dietary regimens based in Galen's famous theory of the body's "humors," and the influence on food culture of philosophical schools such as the Stoics and Epicureans.

When Jacob accidentally switches brains with Principal Greedyguts he decides to make the best of a bad situation by making life better at Dreary Meadows School. Meanwhile Greedyguts does his best to make life miserable for Jacob.

Two brothers, once East Harlem's best Salsa dancers, are separated after the death of their father, only to be reunited years later on opposing ends of gentrification.

The first law of thermodynamics relates the internal energy of a system to the exchange of heat and mechanical work. Focus on isothermal (constant temperature) and adiabatic (no heat flow) processes, and see how they apply to diesel engines and the atmosphere.

Probe examples of Roman legislation in the original Latin, starting with a provision for the sale of sons by fathers from the Twelve Tables, the most ancient codification of Roman law. Examine marriage and divorce law, and a peculiar tradition forbidding the exchange of gifts between a husband and wife.