In hundred years people will probably live in cities built beneath the water, will travel by flying drones and eat food printed by 3D food printers – at least a group of architects and futurologists claims so.
Flying drones should be capable of carrying whole buildings from one place to another. According to those predictions, not only that people would build cities beneath the water but also under the ground. The food is already 3D printable but in 100 years a 3D printer should be in every home’s kitchen. Also, Mars and Moon would be colonized by that time so people would travel there by commercial flights.