Coal’s future depends on our ability to make it cleaner and more efficient.

最伟大的故事是那些揭示人类境遇的故事。

We not only need to build good cars, but also sell them well, and more importantly, provide good service.

The universe is a vast and complex system, and understanding it requires both theoretical insights and observational evidence.

Memory is a kind of accomplishment, a sort of renewal even.