The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

天然气是一种多功能燃料，可以在没有阳光和风的时候提供可靠性，从而支持可再生能源的增长。

复杂的思想，被挤压成十秒的笑点。