If we don’t measure our impact, we’re just guessing at sustainability.

小说是最能捕捉人类复杂性的体裁。

国际体系本质上是竞争性的，国家不断试图互相超越。

The coal industry has a critical role to play in providing affordable and reliable energy while we transition to a lower-carbon future.

我不是一种潮流，我是一个标志。