The two billionth photo at flickr has been uploaded on Sunday. Very impressive, since 500,000 was not that long ago – I’m curious what’s the first photo on flickr that hasn’t been deleted or is private?
The Scale of the Universe – if you ever wanted to put everything in perspective
(hat tip to ScienceAlert)
Se·man·te·rei. Substantiv, f. Ablenkende Debatte über Wortbedeutungen in Sachdiskussionen