Crown-of-thorns starfish crown of thorns

When Crown-of-Thorns Starfish Attack

Australia's iconic Great Barrier Reef is facing a threat from a massive outbreak of crown-of-thorns starfish.
Sika stag deer staring at camera

The Surprising Frequency of Interspecies Mating

Sometimes different but related species can reproduce. When two different species successfully mate, the resulting offspring is called a hybrid.
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Getting to Know Pterosaurs

Everyone loves dinosaurs. Perhaps less well-known are their cousins, the pterosaurs. Pterosaurs could fly, and were closely related ...
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Restoring the Prehistoric Horse

It’s the National Day of the Horse! Do You Know Where the Real Wild Horses Live?
Chimpanzee

The Complexity of Animal Communication

Alarm calls truly display the complexity of animal communication. Chimps tailor their warning communications based on the knowledge level of the recipient.
Vaquita

Why Scientists Couldn’t Save the Vaquita, the “Panda of the Sea”

It might be the end of the line for the vaquita, the world’s rarest marine mammal. A dramatic last-ditch attempt to capture one has failed.
Common thresher shark

Why It’s So Difficult to Save Sharks

Will a ban on shark fins help shark populations? Since sharks are slow-growing and long-lived, once shark stocks are depleted, they take a while to rebound.
Juvenile American Eel

The Final Migration of the American Eel

Every year, thousands of American eels make an amazing migration from their freshwater homes into the Atlantic Ocean, where they spawn and die.

Are Lemurs Going to the Dogs?

Neutering feral dogs in Madagascar means saving the native species.
Gapstow bridge Central Park, New York City

Where Do City Birds Go For the Winter?

Cities can host surprisingly diverse bird species, apart from the ubiquitous pigeons and sparrows. Where do they go in the winter?