article_snippet: Homo erectus, pictured in the reconstruction above, needed around 2200 calories a day to survive and could have easily obtained this by scavenging meat left on the carcasses by predatory big cats in Africa at the time .
article_snippet: Briana Pobiner estimates that early humans like Homo erectus could have obtained enough meat to provide an entire days worth of energy from the scraps left behind by prehistoric predators.
article_snippet: Dr Pobiner said: 'This is enough for the entire daily caloric requirements of at least one Homo erectus/ergaster male, estimated to require approximately 2090-2290 calories per day.'
highlights_snippet: The scientists found that the meat left on carcasses could have provided early humans like Homo erectus with enough calories for an entire day .
  