The origin of turtles has puzzled scientists. A new study provides more evidence that these shelled reptiles share a common ancestor with crocodiles and birds. By Sara Novak Turtles are weird. They ...

Delias sambawana, a butterfly that hails from Indonesia, at the Florida Museum of Natural History. Florida Museum photo by Kristen Grace and phylogeny by Hillis, Zwickl, and Gutell When Akito Kawahara ...

Blue paper has been a popular artist material since the fifteenth century. Crafted from blue rags formed into sheets, this humble material that required expert knowledge to produce and had a profound ...