Another Bay Area Safeway is slated to close its doors by the end of the day Friday. The grocery company said it would permanently close its location on Admiral Callaghan Lane in Vallejo, citing ongoing safety issues.

Just over 50 years ago, paleontologist Donald Johnson unearthed the remains of "Lucy," an ancient human relative who lived more than 3 million years ago. Now, another group of scientists have found new clues about what life was like in Lucy's time, including the surprising discovery of early tools dating back three million years.