煤炭的真实成本必须既考虑其即时价值，也考虑其对社区和生态系统的长期影响。

Your self-worth is determined by you. You don't have to depend on someone telling you who you are.

Women don’t need to wait for permission to live their lives. Make your own plan—for your career, your family, your happiness.

在科学中，就像在生活中一样，重要的事情很少是简单或显而易见的。

The past is always there, and it's always different every time you look at it.