The American Museum of Natural History offers incomparable resources for anyone seriously interested in the natural world. They are now producing a series of videos designed to highlight their mission and their astonishing array of source material.
I've embedded above the fourth video in the series - "Skull of the Olinguito" - which explains how new species can be discovered in archived specimens:
Considering the number of specimens collected during the trip, it’s little wonder that the olinguito—Mammal #66573, a raccoon relative originally identified as a kinkajou—spent nearly 90 years on the Museum’s shelves before being described as the new species Bassaricyon neblina in 2013.The third video in the series was Six Ways to Prepare a Coelacanth. The previous two, and subsequent ones to be released on a monthly basis, are available here. These are concise, interesting, high-production-quality videos tailored for anyone with an interest in the natural world.