Cool things seen recently via Facebook

• How to measure the speed of light using just a microwave, a bar of chocolate and maybe a calculator.
• New Canadian coin which not only depicts the quetzalcoatlus, but its skeleton glows in the dark.
• Following rysmiel's recent post about transposing songs in a major key into a minor one and vice versa, here's a major-key version of "Recovering My Religion, "by" R.E.M. (Digitally, I have no idea how!)