It was perhaps in 2006 or 2007 that I first heard the word "fracking".
I was sitting in the chair at Fetterolf's Barber Shop, getting a trim. Next to me was a Penn State geology professor, talking with animation about the Marcellus shale; how new technology was going to upend the energy industry, and (what's more) how it was going to upend the economy of rural Pennsylvania. Know what? He was right.
Sylvester and Clifford on Curved Space
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Einstein realized that gravity is due to the curvature of spacetime, but
let’s go back earlier: On the 18th of August 1869, the eminent
mathematician Sylve...
20 hours ago

