MOOCs (Massive Open Online Course) are a great way of acquiring new knowledge. Below you will find course providers that are relevant to studying current affairs and global challenges. However, there are lots more out there, but hopefully you will find these suggestions useful.
You can find courses on Class Central or go to the individual course providers. Disclaimer: Tourists & Vagabonds works on establishing affiliate partnerships with the these content providers. As Tourists & Vagabonds is free to use, please consider supporting us by signing up for courses using the these.