Gutneberg printing machine

In 1440, German inventor Johannes Gutenberg invented a printing press process that, with refinements and increased mechanization, remained the principal means of printing until the late 20th century. The inventor’s method of printing from movable type, including the use of metal molds and alloys, a special press, and oil-based inks, allowed for the first time the mass production of printed books.

(via. LisaHolland)

“The Girl Who Silenced the World for 5 Minutes”

In 1992, at the age of 12, Severn Cullis-Suzuki raised money with members of ECO, to attend the Earth Summit in Rio de Janeiro. Along with group members Michelle Quigg, Vanessa Suttie, and Morgan Geisler, Cullis-Suzuki presented environmental issues from a youth perspective at the summit.

(via: Wikipedia)

Galileo moons

Galileo’s best known images of the Moon are five engravings (one of which is a duplicate), that appear in his book Sidereus Nuncius, published in mid-March 1610.

Note: the reproductions shown here are photographic prints from the National Edition of Galileo’s works. At about the 7 o’clock position on E2, E3 and E4 is what looks like the letters “V.T.”. These are presumably the initials of someone who worked on the negatives. These letters do not appear in the printed copies of Sidereus Nuncius.

(via: pacifier)

The UNIVAC I (UNIVersal Automatic Computer I) was the first commercial computer produced in the United States.

(via: YouTube)