Close up image of an old Macintosh computer

Photo by Matt Mech on Unsplash

Image of man in dirty overalls next to pile of graphite bricks

The world's first nuclear reactor was within a pile of graphite bricks • (Public Domain)

Chicago, December 1942

Physi­cist Albert Wat­ten­berg was pok­ing about in the Chica­go branch of the Nation­al Archives recent­ly. He was look­ing for arti­facts used by Enri­co Fer­mi and his team of nuclear physi­cists in achiev­ing the first self-sus­tain­ing nuclear reac­tion in a squash court under the Uni­ver­si­ty of Chicago’s foot­ball sta­di­um in Decem­ber 1942.

Image of bored woman reading books

Photo by Andrea Piacquadio from Pexels

Image of two frogs mating

Atelopus frogs pondering the universal mystery • Photo by Brian Gratwicke (CC BY 2.0)

Image of astronaut repairing Hubble telescope in orbit

NASA astronaut repairing the Hubble in December 1993 • NASA (Public Domain)

Image of fireflies glowing at night

Photo by Mike Lewinski (CC BY 2.0)

Image of the book "The Little Prince"

Photo by slgckgc (CC BY 2.0)

Two inset images from "The Creation of Adam" by Michelangelo

Photo by visuals on Unsplash

Image of Caenorhabditis elegans

Caenorhabditis elegans • Image by Bob Goldstein, UNC Chapel Hill (CC BY-SA 3.0)

Image of fossilized human skeleton laying in museum display case

The fossilized remains of "Nari" • Photo by Akrasia25 (CC BY-SA 4.0)