A baobab tree amid the Makgadikgadi Pan, a region researchers say is the ancestral homeland of all living humans. (Credit: Diego Delso/Wikimedia Commons)

A provocative study claims every living human has an ancestral
homeland in what’s now Botswana, and that our early ancestors dispersed from that
area due to climate change. Dig into the details, however, and there are a few
hefty caveats about the researchers’ methods.

There’s a reason Ancestry.com and other genealogy sites are all t