This is an old round up, but there are still a ton of great ideas here. 50 Creative Ideas To Make Better Cities, Presented On Gorgeously Designed Posters.
Here's a couple of articles positing whether the future of transportation will be tiny, electric vehicles. Will it be a glorified bike? Or maybe an electric car? Honestly, the future of transportation is likely to be walking places, but if I had to put my money on something I'd go with the solar-powered bike.
This has been hashed and rehashed a million times, but why are we working so much? Weren't we supposed to have robots doing everything and be living lives of leisure by now?
I love this idea so much! A light source that uses gravity for power.
No no no no no no no! Is this what urban buildings will look like in the future?