As principal of a low-performing high school, Linda Cliatt-Wayman's students faced huge challenges. She describes how she transformed her school while providing unwavering love and support for her students.
Every 30 days, Matt Cutts gives himself a new challenge: writing a novel, giving up sugar, even chewing more slowly. He says 30 days is enough time to develop a habit or just make life more interesting.
Data Scientist Jeremy Howard has studied machine learning for 25 years. He says artificial intelligence can help achieve amazing things. But he warns the impact on jobs may cause a great deal of social instability.