Maggie returns to protect Britain's beloved royals against an international plot--one that could change the course of history. As World War II sweeps the continent and England steels itself against German attack, Maggie Hope, former secretary to Prime Minister Winston Churchill, completes her training to become a spy for MI-5. Spirited, strong-willed, and possessing one of the sharpest minds in government for mathematics and code-breaking, she fully...

Delving deeper into the nature of light, you explore the strange duality between electromagnetic waves (light waves) and particles (photons), which is a fundamental feature of quantum theory.

The 1980 Iran-Iraq War fundamentally changed geopolitics in the region; human costs aside, the conflict altered international relations in the 21st century. Delve into a three-way rivalry between Iraq, Iran, and Saudi Arabia that eventually blossomed into war, and understand how the United States fit into the mix.

Although we tend to think of rats and mice as lab animals, insects-particularly the fruit fly-have played critical roles in research. Explore the many discoveries made in the field of genetics using fruit flies, as well as the fascinating opportunity to watch natural selection in action thanks to the peppered moth and smoke from the Industrial Revolution.

Mighty glaciers have carved the landscape of western and eastern Iceland into beautiful, scarred fjords. First, visit Westfjords, where you'll find the oldest site in Iceland and one of the largest bird cliffs in Europe. Then, continue to Eastfjords: home to an artsy community in the heart of reindeer country and 286 square miles of forest.

The Amazon River collects rainfall from a huge region, called the Amazon basin. Trace the basin's extensive network of tributaries, which produce 20% of the fresh water that flows into the ocean. Furthermore, the basin's lush vegetation is responsible for 20% of all oxygen in the atmosphere.

NEW YORK TIMES BESTSELLER • From the bestselling author of V2 and Fatherland—a WWII-era spy thriller set against the backdrop of the fateful Munich Conference of September 1938. Now a Netflix film starring Jeremy Irons.
With this electrifying novel about treason and conscience, loyalty and betrayal, "Harris has brought history to life with exceptional skill" (The Washington Post).
Hugh Legat...

Explore cybernetics, systems that use information and feedback to control an output that has some type of goal, with feedback present. Discover the various parts of several cybernetic systems: your car's cruise control, an implantable insulin delivery pump, and a vending machine-three completely different control systems that all function with the same principles of cybernetics.

Turn to non-foliated metamorphic rocks, those without a distinctive mineral orientation. Investigate the different geologic conditions that create such rocks. Then survey a wide selection, spotlighting their beauty (marble), utility (soapstone), durability (quartzite), and economic value (banded iron formations). Professor Cotter discusses a few of his favorite metamorphic sites.

Investigate the scale and scope of violent conflicts in Latin America. Start by examining the lead up to a civil war in Guatemala. Investigate the rise of communism in Cuba through the life of Fidel Castro. Then, take a closer look at the violence surrounding a right-wing government in Chile and a left-wing government in Nicaragua in the late 20th century.