We have electricity, light bulbs and flickering TV and computers screens but we don't understand our sleep cycle and the circadian rhythm. We are a sleep-deprived civilization.
Our scientists already know how learning works (semantic encoding and repetition are the key), but we still cram kids in Austro-Hungarian like classrooms.
We are the last generation to waste drinking water. Water is already today a precious resource. In the future this will be even more pronounced.
Great article, got me thinking.
If you're interested, I recommend
 The Promise of Sleep: http://www.amazon.com/Promise-Sleep-Medicine-Connection-Happ...
 Brain Rules: http://www.amazon.com/Brain-Rules-Principles-Surviving-Thriv...