Hey, Dave!

David from KA here; we're on the case!  Here's what's up: World History has been approached in a piecemeal fashion for the last five years, but we've assembled a team to start working on World History in a more systematic way.

Look for quizzes on antiquity in the next few months; we just completed a tutorial about prehistory, and we're continuing from there:

https://www.khanacademy.org/humanities/world-history/history-beginnings/origin-humans-early-societies/v/how-is-prehistory-knowable