The number of humans living in the United States of America: 308.7 million. As for the number of mountain gorillas in the Virunga Massif in Uganda?

There were more than 480 mountain gorillas alive in their main home in Africa's Virunga Massif this spring, 230 more than were there 30 years ago, a census by several conservation groups found.

The gorilla, Gorilla beringei beringei, mainly lives in the wild in two places in Africa, the Virunga Massif and the Bwindi Impenetrable National Park in Uganda.

The big question is this: Why is the ape branch of primates so small? The variety of the monkey branch is stunning when compared to the ape branch. Yet one member of the ape branch exploded in number. How did this happen? Why didn't the tiny branch of apes get blown away like a dry twig in the wind?