Llamas are cute, but what makes them even better human companions is their gentleness and empathy. People from their native habitat, the Andes Mountains in South America, dub them “silent brothers”.

Scientists have discovered the stem cells, CXCL12, that anchor teeth to the bone, opening up new possibilities for ...

A newly discovered pair of stem cell lineages drives the formation of both tooth roots and the bone that anchors them. Understanding how these cells switch roles could pave the way for regenerating ...

Shark teeth are everywhere once people start noticing them. They turn up in fossil shops, washed along beaches, buried inside ...