Science is a way of thinking much more than it is a body of knowledge.
页岩革命将美国转变为全球能源领导者。
It's sort of sad when you think of a kid like that going through life without a sense of humor...
People must feel that the natural world is important and valuable and beautiful and wonderful and an amazement and a pleasure.
Every challenge in quarry operations is an opportunity to innovate and improve.