railfan

The Eerie ICE 3 Explosions of the European Countryside

Here's a thing I became mildly obsessed with this weekend (thanks to the "new issue"http://www.smithsonianmag.com/science-nature/How-Biomimicry-is-Inspiring-Human-Innovation-165592706.html of _Smithsonian_): "tunnel boom." Tunnel boom is a common...