Science News:

For Lucy and her ancient hominid comrades, raw meat sliced off animal carcasses was what’s for dinner. That’s the implication of a new study, published in the Aug. 12 Nature, describing butchery marks made by stone implements on two animal bones from about 3.4 million years ago.
The kinds of time that are packed into these tools is dizzying. They were quickly fashioned, used maybe once or twice, and dumbly discarded and forgotten. And to think that out of the millions upon millions of days that went by, it only took one for them to be rediscovered and repurposed by another, less hairy primate. Eternity is always like this, always a strange mixture of tiny and vast amounts of time.