Learn how three new toad species from Tanzania’s Eastern Arc Mountains evolved to skip the tadpole stage — revealing one of nature’s rarest reproductive strategies.

Learn how rainy and cold weather may be linked with joint pain, impacting those with arthritis or other musculoskeletal ...

Detected in three drug samples during community checks, the little-known opioid cychlorphine may be as potent as fentanyl, ...

Prehistoric trees like Ginkgo and monkey-puzzles still have close relatives that go back at least to the time of the dinosaurs.

Learn more about the discovery of the electron and why J.J. Thomson often gets the credit.