Waste treatment / recycling centers.
Sewers and plumbing have been around for centuries ... But it's GREAT that we no longer have to just dump it in the streets or rivers.
What is one example of modern technology that you are really excited about?
Only one?
Nanotechnology.
Not the "driverless" cars. What is the point in buying a car you don't drive?
Flying cars! YAAAYY
3D Printing is useful. I, on the other hand, am very excited of metamaterials.
“Sense and avoid” drones
Flying robots to check power lines or deliver emergency aid have become an important
and controversial part of military capacity in recent years.
Prom chip replacing cds and dvds for music and movies