Encyclopaedia Britannica has announced it has stopped printing books because its multimedia CD-Rom version is a much bigger seller.
The end of a tradition reaching back more than 200 years came about because the company now sells only a minimal number of books, compared with 150,000 CD-Roms every year in Europe alone.
Price is also a major factor. A full set of volumes costs £900 while the computerised version, containing the same information, is priced at just £89.
"The economics of the encyclopaedia business mean it is far more profitable for us to concentrate on electronic publishing rather than book publishing," said a spokesperson for the company.
The company said it sells far more of the CD-Rom versions and consumer feedback has been that they are “far more user friendly”.
Some parts of Atacama have not received rainfall for 500 years - but a sudden deluge of water upset the Desert's delicate biological balance
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Greenland crater one of the 25 largest impact craters on Earth
This long-sought progenitor star was identified in an image captured by Hubble in 2007