From legless lizards to purring monkeys, scientists described thousands of unique animal species in 2013. Some species-rich regions like the Amazon basin yielded hundreds of discoveries, while museum collections provided genetic information that allowed scientists to describe hundreds more. Over 1.6 million species of animal life are currently known, but global biodiversity is estimated to be much greater—perhaps 10 million animal species or more. Tree frog image by Trond Larsen, from a Rapid Assessment Program (RAP) survey of a previously unexplored area of southeastern Suriname. See more at blog.conservation.org/2013/10/expedition­-to-southeast-suriname-uncovers-60-new-s­pecies-and-untold-natural-wealth/ Science Bulletins is a production of the National Center for Science Literacy, Education, and Technology (NCSLET), part of the Department of Education at the American Museum of Natural History.