By studying our closest single-celled relatives, scientists find that proteins important for stem cell pluripotency existed before the evolutionary jump to multicellularity.
In 79 AD, Mount Vesuvius violently erupted and buried the city of Pompeii under ash, preserving the city and many of the volcano’s victims. In the 1700s, when archaeologists discovered the ruins at Pompeii, they filled empty cavities left by the…