A new study led by researchers at the American Museum of Natural History presents the oldest known example in the fossil record of an evolutionary arms race. These 517-million-year-old predator-prey ...

Researchers have discovered the oldest known example of a predator-prey “arms race,” based on their study of ancient fossils. This ancient predator-prey relationship took place 517 million years ago ...

Some lizards have evolved to be resistant to the venom of snakes, entering into a sort of evolutionary arms race with their limbless cousins. A family of lizards known as varanids has evolved ...

Examples of Lapworthella fasciculata shells (under scanning electron microscope) from the Mernmerna Formation, Flinders Ranges, South Australia, showing holes made by a perforating predator. Scale ...

In a quiet part of what is now South Australia, more than half a billion years ago, life was locked in battle. The ocean floor teemed with small shelled creatures trying to stay alive as newly evolved ...

(via PBS Terra) It’s grudge match time. Except that this one took place over millions of years, between two fierce and formidable enemies. It’s attack vs defence on an epic evolutionary scale.

The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. How do new species arise? And why are there so many of them? One possible ...

The Irish potato famine of 1845–52 resulted in more than a million deaths. Another million people were displaced, and Ireland’s population was reduced by about 25%. The cause of widespread potato rot ...

In evolutionary terms, fitness is defined as an organism's ability to survive and reproduce its genes into the next generation. Genes influence fitness, sometimes competing against each other within ...

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