Terry Pratchett’s name lives on in ‘the clacks’ with hidden web code
X-Clacks-Overhead
GNU Terry Pratchett
Category: Technology
The Martian
My favorite line in "The Martian" trailer, uttered by Matt Damon, is “I’m going to have to science the shit out of this.”
— Neil deGrasse Tyson (@neiltyson) June 17, 2015
London Post Office Railway – Wikipedia, the free encyclopedia
How Deep Does London Go?
Ever wondered how far down the city reaches?
Source: How Deep Does London Go?