On a cold January day in 1986, all seven crew members of the Challenger Space Shuttle died in a catastrophic explosion shortly after liftoff from Cape Canaveral, Florida. Later it was found that NASA mission specialists and managers had ignored warnings of the effects of ice and cold on the shuttle’s solid rocket booster engine [...]

A few years back, I was cleaning some bluegills after a nice day of fishing with our three boys. It was late, we were hungry, and I was struggling to get good fillets for dinner as my knife was dull. Rather than fight it and mess up more fillets, I took some time to sharpen [...]