For extra credit, I gave my students in #Water Technology & Policy the chance to make memes representing something they learned in class. The result: 
Shared here with permission. Enjoy!

Shared here with permission. Enjoy!
And what is a "water of the United States" #WOTUS anyway?
The Clean Water Act and non-point sources, by @allifaulkner
Garbage in the ocean, by @LucasKomara
Science in the courtroom, by @lydiakurtz5
Water footprints of beverages, by @vitoriafcleme
Water + energy, and WOTUS, by @Zahra_heydarii
And a bonus from @Zahra_heydarii. Don't worry, you're in good company. :)