In the quest for understanding the cosmos, every question answered leads to a dozen more.
The future of coal is not about volume, but about value creation through technology and sustainability.
For the past 33 years, I have looked in the mirror every morning and asked myself: 'If today were the last day of my life, would I want to do what I am about to do today?' And whenever the answer has been 'No' for too many days in a row, I know I need to change something.
Leadership is about making tough decisions today that will benefit future generations.