Science, Maths & Technology
Strange coloured teeth; strange coloured bones
...the origins of turquoise-like ivory (odontolite) acquired from deposits of fossilized mastodon teeth and used decoratively in the Middle Ages. You can read the original version of this article, with references, at roisincerate.com You might also like our short audio feature on glow worms... Or read a short profile of Osamu Shimomura, who discovered why jellyfish glow....