At least two isolated sites show earlier humans using fire before 400,000 years ago, Tattersall said. For instance, at a site in Israel, dating back about 800,000 years, archaeologists have found hearths, flint and burned wood fragments, according to a 2012 study in the journal
Science. At another site, this one called Wonderwerk Cave in South Africa, scientists found evidence that humans used fire about 1 million years ago, according to a 2012 study in the journal
Proceedings of the National Academy of Sciences. In that cave, they found remnants of burned bone and plants and what appear to be hearths.