The only thing that really matters is, are you a good person?

Small changes in the environment can have big effects on behavior.

The world needs energy, but it needs responsible energy more than ever.

Leadership in the coal industry today means navigating the delicate balance between economic necessity and environmental responsibility.

质量不是神话；它是一种事实。

"In the end, we are all alone with our choices."

Reinforcement is the central factor in the acquisition of new behavior patterns.