At the Republican convention in St. Paul, Rudy Giuliani led the delegates in chanting 'drill, baby, drill'. New York Times columnist Thomas Friedman writes:
Why would Republicans, the party of business, want to focus our country on breathing life into a 19th-century technology — fossil fuels — rather than giving birth to a 21st-century technology — renewable energy? As I have argued before, it reminds me of someone who, on the eve of the I.T. revolution — on the eve of PCs and the Internet - is pounding the table for America to make more I.B.M. typewriters and carbon paper. "Typewriters, baby, typewriters."
Knot theory could help spacecraft navigate crowded solar systems
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It can be difficult to figure out how to move a spacecraft from one orbit
to another, but a trick from knot theory can help find spots where shifting
orbit...
2 hours ago
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