The last surviving male died in March this year.
This genetic variant may help explain different health disparities between those of African and European decent.
But brutal rulers like Genghis Khan could also be to blame.
"It's like a paternity test, not between father and son but among peoples."
Researchers looked into genetic data on over 300,000 people ages 16 to 102 to learn which genes are linked to intelligence.
If the Arctic permafrost melts, greenhouse gasses equivalent to burning all of the world's forests two-and-a-half times over could be released.
Every day, 91 Americans die from an opioid overdose.
There may be a biological association between father's age and offspring's lifespan.
Neanderthals aren't the only ancient people that have left traces in our modern DNA.
A genetic technique could uncover potential new treatments for diseases by studying the animal kingdom.
Up to 90 percent of the people responsible for Stonehenge disappeared.
The flying mammals can survive on a meal that almost no other mammal can.
But more information is not always better, according to a geneticist.
"We've never seen anything this powerful," researchers said.
A clinical trial using an antibiotic to treat autism is ongoing in California.