The microscopic flatworm (Stenostomum brevipharyngium) is one of nature's weirder creatures. Chop off its head, and it'll grow one back. Cut it in half, and it'll become two separate healthy worms.

The answers to some of medicine’s most challenging problems can come from the most unlikely sources. Who would have thought ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Imagine waking in the morning with no brain, and no memory ...