Why do we remember the past and not the future? What does it mean for time to "flow"? Do we exist in time or does time exist in us? In lyric, accessible prose, Carlo Rovelli invites us to consider questions about the nature of time that continue to puzzle physicists and philosophers alike.--

This program, guest-hosted by CNBC's Stuart Varney, profiles Jack Welch, dubbed Most Admired CEO of the Century by Forbes and lauded by Fortune as "perhaps the most admired CEO of his generation." General Electric's former chairman and CEO shares his commonsense philosophy and the leadership initiatives that transformed GE and revolutionized the world of business. In addition, MBA students and faculty from the University of Michigan Business School...

This lesson focuses on linear function rules and graphs. Students begin by reviewing the meaning of a function, and that a function can be represented by a table, a graph, a formula, or in words. They then explore the relationship between a function and the coordinates of the points on its graph. They examine the effect of changing the value of a in y = ax, and look at the slope of a road defined as the change in y divided by the change in x. They...