A mouse’s sperm is much, much larger than an elephant’s sperm. A fruit fly produces the longest sperm known to science. Why do tiny animals make big swimmers, but large animals make small ones? There ...

Researchers have studied rat and mouse whiskers, but these key organs for elephants have been largely overlooked.

Scientists have for the first time measured how fast large-scale evolution can occur in mammals, showing it takes 24 million generations for a mouse-sized animal to evolve to the size of an elephant.

Scientists have for the first time measured how fast large-scale evolution can occur in mammals, showing it takes 24 million generations for a mouse-sized animal to evolve to the size of an elephant.

If you're a fan of elephants and tiny things (which, let's face it, everyone is), then you will be as excited by this as we are: scientists in California have discovered a new species of mammal called ...