American Museum of Natural History

When glassfrogs sleep, they turn their bodies transparent in order to evade predators. Scientists have now discovered that they do so by moving their red blood cells into their liver – and the finding could have implications for human medicine.

The dinosaur king may yet retain its crown. Earlier this year a study proposed that the iconic Tyrannosaurus rex should be split into three distinct species, but a new analysis says there isn’t enough evidence for such a drastic shake-up.

Scientists working in the West African country of Guinea have discovered a new orange-furred species of bat. The rare discovery came while conducting field surveys in the isolated Nimba Mountain range.

Research led by scientists associated with the American Museum of Natural History suggests that dinosaurs and pterosaurs descended of a very tiny ancestor, shedding light on how the characteristics of dinosaurs and flying pterosaurs evolved.

​The mystery of a highly unusual Caribbean monkey has finally been solved. Xenothrix, a long-extinct primate, was so unlike any other living monkey that no one could agree what it was. Thanks to DNA analysis we now know that it is most closely related to South America's titi monkeys.

​If you're wondering what types of mammals are present in a given area of wilderness, why not check for their DNA in animals that feed on their blood – leeches? That's what researchers from the American Museum of Natural History have done, with good results.