A controversial idea suggests the ancestors of echidnas were more like the platypus. For the first time, fossil evidence might support it.
- Professor, Australian National University
For more than a century, scientists have been puzzled by the set of shared changes that happen to many animals when they are domesticated.
The assumption that females are just smaller versions of males has been widely used in biomedical research. A new mouse study indicates that’s unlikely to be true.
Echolocation evolved multiple times in bats over millions of year. Yet the earliest bat ancestors probably didn’t have this skill — or if they did, it was likely very primitive.
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