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Charlie Martin writes on science, health, culture and technology for PJ Media. Follow his 13 week diet and exercise experiment on Facebook and at PJ Lifestyle

WRITTEN BY Charlie Martin
What if I told you we already have high-speed rail in the United States?
When your competition can eliminate 90 percent of the costs you pay, you're in big trouble.

A product people want to buy for a price they're willing to pay.
"All models are wrong, but some are useful." Sometimes the question is how they're useful.
Should science be logically and empirically correct? Or should it be what someone thinks "responsible."