The shuttle program ends, and with it, an era of American tech excellence
The last American space shuttle, STS-135, lifted off this morning, bringing to a close a remarkable era in U.S. technological […]
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How to Make a Clock Run for 10,000 Years
High on a rocky ridge in the desert, nestled among the brush, is the topmost part of a clock that has been ticking for thousands of years.
It looks out over the ruins of a spaceport, built by a rich man whose name was forgotten long ago.