Identifying Earliest Stone Tools Is "Most Important Discovery" in a Half Century -- and a Score for ID

The evolution-related story of the hour is the discovery of stone tools in Kenya predating, by 700,000 years, the previously known earliest such handmade tools. From Live Science:

The oldest handmade stone tools discovered yet predate any known humans and may have been wielded by an as-yet-unknown species, researchers say.

The 3.3-million-year-old stone artifacts are the first direct evidence that early human ancestors may have possessed the mental abilities needed to figure out how to make...