Like the other Vsauce channels, Vsauce3 produces a new video about twice per month. Recent videos focus on Mars, meteorites, and ripping out spines. Very interesting topics!
If you need more Vsauce after watching all three Vsauce channels, well, you're out of luck. There are no more at this time. There are, however, many excellent science channels out there, several of which I've shared on this blog.