Six animal species, including the slender-billed curlew and Christmas Island shrew, were confirmed extinct in 2025. Habitat loss, invasive species, climate change, and hunting are the primary drivers ...

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New research suggests a genetic dynamic that may have contributed to Neanderthals' extinction. Neanderthal-Museum, Mettmann CC BY-SA 4.0 via Wikimedia Commons Did interbreeding between humans and ...

Operant conditioning, sometimes called instrumental conditioning or Skinnerian conditioning, is a method of learning that uses rewards and punishment to modify behavior. Through operant conditioning, ...

Eunice Framm, senior keeper of barnyard animals at the Cincinnati Zoo, has taught pigs to bowl, goats to paint, and red pandas to receive vaccines. She, and all other keepers, do so through the zoo’s ...

Earth has a long and dramatic history, and one recurring theme is extinction. Did you know that over the last 500 million years, our planet experienced five major mass extinction events? These events ...

We may not be living through Earth’s sixth mass extinction event ­­— at least not yet. That’s the conclusion of a new analysis of plant and animal extinctions published September 4 in PLOS Biology.

A mass extinction event is a term used to describe a large-scale event that wipes out species. It is usually not a short, one-time incident but rather something that occurs over thousands or millions ...

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