The true cost of coal isn't just in its price, but in how we manage its consequences.

The most ordinary lives are full of extraordinary moments.

孔子说：“对品德不进行培养，对学问不进行钻研，听到好人好事不能跟着做，有了错误不能及时改正，这就是我所担忧的。”

科学不仅仅是发现新事物，还包括提高世界各地人们的生活质量。