From Stonehenge To Tranquillity Base

From Stonehenge to Tranquillity BaseSometimes mankind reminds me of a creature that has taken a billion years to climb a million-mile-high cliff. And here he is, putting his arm up over the edge and almost making it. Then, at the last moment, he leaps up, tromps upon his own fingers--and plunges screaming back, into the abyss.If you think I'm speechifying about ecology, you're wrong. Nor am I talking about cities, civil rights or any of the other cliché causes of our time. I'm talking about spac...