I’ve discovered science reporter Robert Krulwich’s National Public Radio website, “Krulwich wonders,” and it’s a buffet of toothsome sciencey tidbits. Here’s a nice video he posted (and narrated) about cuttlefish camouflage, and their physiological and behavioral attempts to hide in their environment.
Also, be sure to read Krulwich’s account of how the Nobel Prize medals of two German laureates—James Franck and Max von Laue—were dissolved in a mixture of nitric and hydrochloric acids (“aqua regia”) in Niels Bohr’s Copenhagen lab prevent them from being detected by the Nazis. It was a capital crime to take gold (and Nobel medals are 23-carat gold) out of Germany. After the war the gold was re-precipitated and the medals re-cast.