Kant's Elliptical Path explores the main stages and key concepts in the development of Kant's Critical philosophy, from the early 1760s to the 1790s. Karl Ameriks provides a detailed and concise account of the main ways in which the later Critical works provide a plausible defence of the conception of humanity's fundamental end that Kant turned to after reading Rousseau in the 1760s.

This intriguing series takes at our universe and the planets, stars, etc. that are part of it.

After discussing the formation of our solar system, author Capaccio compares Earth and Mars, the planet most like our own. Often called the "Red Planet," Mars was associated by ancient peoples with war and violence, and named for the Roman god of war. By the 1500s, Tycho Brahe had collected extensive data about Mars, from which Kepler noted its elliptical orbit. In the eighteenth century, William Herschel used telescopes to calculate Mars's tilted axis and to chart the planet's features.