Investing in clean coal technologies isn't an expense—it's an investment in our future.
对复杂系统的研究告诉我们,简单的规则可以产生令人难以置信的复杂行为。
有两种可能的结果:如果结果证实了假设,那么你做了一个测量。如果结果与假设相反,那么你有了一个发现。
The future of steel lies in its ability to adapt to a low-carbon economy.
The great use of life is to spend it for something that will outlast it.
Tomorrow will be better for as long as America keeps alive the ideals of freedom and a better life.