Friends of mine have a daughter diagnosed with Rett Syndrome and have done a short video about it:
https://www.youtube.com/watch?v=ukQG...I10ueGWaDOkkPY
If you have three minutes, please watch. Any revenue they generate from the video (as a result of the ad playing beforehand) they're donating to two organizations sponsoring clinical research trials. And, if you're so motivated, share the video link.
I'd never heard of Rett Syndrome before this video; it's a pretty rare condition, but very devastating for families that have a daughter with it.