Calculating miles per gallon for electric cars

“GM says new Volt could get 230 mpg in city driving.” This was a headline yesterday about GM’s new electric car. Wow, pretty impressive! But wait,… what?!? This car (which seems quite promising, actually) has batteries that can propel the car for approximately 40 miles. Only after the batteries are empty does a gas-powered generator…

Judges, sonar, and innumeracy

Good Math, Bad Math has an interesting blog post about the recent Supreme Court case over the Navy’s use of sonar near marine wildlife. In the blog (and in the readers’ comments that follow), they talk about Chief Justice John Roberts use (misuse) of mathematics in his written decision.

Not so elementary my dear Doyle

I loved Sherlock Holmes mysteries when I was a child. A few years ago I learned the disappointing news that Sir Arthur Conan Doyle was a spiritualist who believed in séances.  Because of this, his once close friend Harry Houdini became a rival. Their falling out began when Houdini joined the Doyles for an intimate séance,…