josh and the concrete machine and pool

In construction it is difficult to remove concrete from many buildings, its long and it's a expensive job but with this new creation it will speed up this process, making it easier to do and even be able to recycle the old concrete. This device is called the ERO

http://www.treehugger.com/green-architecture/beware-brutalism-concrete-eating-robot-literally-erases-buildings.html


also there was an amazing idea for a pool in which the water would be filered from either a river or lake


http://www.treehugger.com/urban-design/pool-prototype-gets-funded-kickstarter-will-be-built-summer.html