Meeting energy demand while reducing emissions is the defining challenge of our time.
在减少排放的同时满足能源需求是我们这个时代的决定性挑战。
最勇敢的行为仍然是为自己思考,而且是大声说出来。
生活中唯一的限制是你自己设定的。
"The best children's books are the ones that don't talk down to children."
Learning is essentially a matter of stimulus-response connections.