Early humans relied on simple stone tools for 300,000 years in a changing east African landscape

Our prehistoric human ancestors relied on deliberately modified and sharpened stone tools as early as 3.3 million years ago.

10+ useful Google Docs tricks that streamlined my workflow (no plug-ins required)

If Google Docs feels slow or pages aren't loading, I recommend clearing out your browser cache. A quick shortcut to open the deletion menu is Ctrl + Shift + Delete on Windows and Cmd + Shift + Delete ...