In A Nutshell A tiny, 250-million-year-old fossil from South Africa offers the first compelling evidence that an ancient ...

Scientists discover the first fossil egg of a mammal ancestor, offering new clues to how Lystrosaurus survived extreme ...

A 250-million-year-old fossil from Africa reveals that early mammal ancestors laid eggs, offering insight into their survival ...

The evolutionary success of the first large predators on land was driven by their need to improve as killers, researchers suggest. The evolutionary success of the first large predators on land was ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

Fossil skull of the extinct cynodont therapsid Cynognathus crateronotus. Cynognathus was a powerful predator that was close to being a mammal, but not quite. It has been found in several parts of ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American With hues inspired by calcite and a plastic ...