Fossils of giant pterosaurs found in Transylvania

(Phys.org)—A pair of researchers in the U.K. has identified fossils found in the Transylvania area in Romania as those of a pterosaur they have named Hatzegopteryx—a giant, muscle-bound flying reptile that could eat prey ...

Leonardo da Vinci's tree rule may be explained by wind

(PhysOrg.com) -- More than 500 years ago, Leonardo da Vinci observed a particular relationship between the size of a tree’s trunk and the size of its branches. Specifically, the combined cross-sectional areas of a tree’s ...

Bolivian river dolphins observed playing with an anaconda

A trio of scientists, one with Universidade Federal do Rio Grande do Sul, another from Museo Historia Natural Noel Kempff Mercado and a third independent researcher, report evidence of several Bolivian river dolphins playing ...

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