While we don't have all the answers yet - including whether it came from an animal reservoir - a new analysis has definitively put to rest the conspiracies that claim it's a lab-made disease.
It's the first research to show definitively that dogs are sensitive to our facial expressions, says coauthor Ludwig Huber, head of comparative cognition at Messerli Research Institute at the University of Veterinary Medicine, Vienna.
This dual status means that neither of you is definitively liable for road tax.
But even more surprising than its Pepto-Bismol shade is that "nobody seems to be able to definitively explain its distinctive colour," according to Quora user Garrick Saito.
" No one has answered the questions definitively, but it's a good bet that driverless cars will be involved in far fewer accidents than ones with -- otherwise, why have them?
If science can't definitively prove soulmates exist, what about psychology?
It's the first research to show definitively that dogs are sensitive to our facial expressions, says coauthor Ludwig Huber, head of comparative cognition at Messerli Research Institute at the University of Veterinary Medicine, Vienna.
It seems likely that as CDs disappear from big-box stores and coffee megachains, they will be definitively gone.
