fader
black-wolves:

 (by karlerikbrondbo)
kqedscience:

Wow! This new metal - which is 99.9 percent air - is so light that it can sit atop dandelion fluff without damaging it.It was developed by a team of researchers from UC Irvine, HRL Laboratories and the California Institute of Technology and is about one hundred times lighter than Styrofoam.

London, 1940s, in hi-res colour. These photographs were taken using Kodachrome film by the improbably and wonderfully named Chalmers Butterfield, probably in 1949. Via How To Be a Retronaut.
myedol:

High bridge by Several seconds on Flickr.
helloalyshia:

Frank Gonzales
drawingarchitecture:

vertical street/city by Sergiy  Prokof`yev, Arsenii Kuznetsov, Oleksandr Garashchenko / via evolo