Star Trek's replicator technology looks a bit more microwave than printer. Beaming stuff together seems like a pretty good idea, and certainly cleaner than nozzles blowing carbs and proteins into an edible, but hardly something we're ready to crack in the near future.
The UN thinks we should be eating more bugs. (And my mother was freaked out by sushi the first few times she saw it). There are many places in the world where insects are on the menu and supposedly a few species that are excellent dining. Some people are serious enough about it, there are even some nice recipe sites hosted by the likes of Iowa State's Entomology Club and Arizona State University - Mmmm, bug bars.
A great article on Next Big Future about drones and precision farming pointing out the results of using this process to manage nitrogen alone are seeing an increase of income per acre from both decreased expenditures and increased crop performance. The practice uses multispectral imagery, combined with other traditional testing methods, to identify how much seed, fertilizer or other crop supporting products to use in a given field zone.
