January 20, 2009 Science Source

Albert Einstein (1879-1955). Einstein was born at Ulm, Germany on March 14, 1879. Encouraged by his father, who was an electrical engineer, Einstein s...

Albert Einstein (1879-1955) being interviewed by anthropologist and writer Ashley Montagu (1905-1999) in 1946. Einstein was born at Ulm, Germany on Ma...

Albert Einstein (1879-1955). Einstein was born at Ulm, Germany on March 14, 1879. Encouraged by his father, who was an electrical engineer, Einstein s...

Julius Nyerere (1922-1999), president of Tanzania from 1964 until 1985, with British paleoanthropologist Mary Leakey (1913-1996) at a skull presentati...

Marchese Guglielmo Marconi (1874-1937). Italian physicist who won the Nobel prize with Karl Ferdinand Braun for wireless telegraphy in 1909.

B. F. Skinner (1904-1990), American experimental research psychologist and exponent of radical behaviorism.

B. F. Skinner (1904-1990), American experimental research psychologist and exponent of radical behaviorism.

B. F. Skinner (1904-1990), American experimental research psychologist and exponent of radical behaviorism. He is shown here with a pigeon in his labo...

B. F. Skinner (1904-1990), American experimental research psychologist and exponent of radical behaviorism. He is shown here with a pigeon in his labo...

Nuclear explosion from Operation Crossroads at Bikini Lagoon in July 1946. More than 90 vessels were assembled in the lagoon to study the effects of n...

Albert Einstein (1879-1955).

"The doctor discovers, one by one, the secrets of the human body." Andreas Vesalius (1514-1564), the Belgian anatomist who founded modern anatomy. In...

Joseph Priestley, British chemist, born March 13, 1733; died Feb. 6, 1804. Portrait of the theologian, philosopher, political economist and chemist Jo...

Professor Skinner conducting a pigeon experiment. Professor Skinner invented the operant conditioning chamber (Skinner box), to research the behavior...

This anatomical illustration shows the human mid-section.

This is a myological plate, originally done by Crisostomo Martinez. This is a copy done by Johann Ludwig Choulant, (1791-1861).

This is an illustration of a human skeleton, done by Thomas Geminus, from the 16th century.

This is an illustration of a cross-sectional view of the human head, done by Paolo Masscagni, (1755-1815).

This is an anatomical illustration done by Thomas Geminus, from the 16th century.

This is an anatomical illustration done by Jacques Gamelin, (1739-1803).

This is an anatomical illustration done by Jacques Gamelin, (1739-1803).

This is an anatomical illustration done by Thomas Geminus, from the 16th century,

Portrait of Donald Glaser (born 1926), American physicist. In 1952, Glaser invented the bubble chamber for detecting fast-moving sub-atomic particles.

Small and large Dalkon shields; a contraceptive intrauterine device (IUD). The device caused severe harm to many women and in some cases septic sponta...

Classroom at the Maryland School for the Deaf. Photograph taken prior to 1899.

An illustration of a 15th century Arabic astrolabe. The astrolabe serves many functions, including surveying, and predicting the positions of stars, p...

Ripple Rock exposion in Seymour Narrows, British Columbia, 1958.This was the largest non-atomic blast ever set off at the time. It ripped out tow grea...

Geographer with loadstone by Stradanus; 15th century.

One of the first drawings ever made of the moon, by Galileo, 1610.

An aerial photograph of Surtsey, a volcanic island near Iceland's southwestern coast, which was formed following an eruption in 1963.

World weather center, Department of Commerce computer room.

Olduvai Gorge, Tanzania. Shown pointing is Kenyan archaeologist and anthropologist Dr. Louis Leakey (1903-1972), who helped to establish the field of...

Bison bull in transverse gallop; Sequential shots made by Eadweard Muybridge in the late 19th century.

Kenyan archaeologist and anthropologist Dr. Louis Leakey (1903-1972) and an assistant at work in Olduvai Gorge, Tanzania, Africa. Leakey helped to est...

Dr. Louis Leaky and Mary Leaky with Zinjanthropus skull, discovered at Olduvai Gorge.

British anthropologist and archeologist Mary Leakey (1913-1996) at the site of the fossil remains of a prehistoric Deinotherium ("terrible beast"). Th...

Dr. Louis Leaky uncovering Zinjanthropus palate, Olduvai Gorge, Tanzania.

Dr. Louis Leakey (1903-1972) showing the geological level at which the Zinjanthropus boisei skull, nicknamed Nutcracker Man on account of his large mo...

Diffraction apparatus used to collect and evaluate experimental antibiotics. Pfizer Plant, Maywood, N.J.

Dr. Louis Leakey at work in Olduvai Gorge, Tanzia, Africa.

Dr. Louis Leakey at work in Oduvai Gorge, Tanzia, Africa.

Dr. Louis Leakey showing the geological level at which the Zinjanthropus boisei skull, nicknamed Nutcracker Man on account of its large molars, was fo...

Nurse, in hospital examining room, preparing medications for patients under her care.

A photo of the atomic bomb detonation over Hiroshima, Japan, on August 6th, 1945.

German-Swiss-US physicist Albert Einstein (1879-1955) with his cousin & second wife Elsa Einstein Lowenthal (1876-1936) arriving in San Diego, Cliforn...

Portrait of Albert Einstein after an ink drawing by R. Kastor in the 1920's. Einstein was born at Ulm, Germany on March 14, 1879. Encouraged by his fa...

Portrait of Albert Einstein, probably taken in 1921 by Schloss of New York. Einstein was born at Ulm, Germany on March 14, 1879. Encouraged by his fat...

Johannes Kepler, German astronomer (1571-1630). Kepler devised the three fundamental laws of planetary motion. These laws were based on detailed obser...

These dental extraction keys date from between 1780 and 1810.

Trephine instruments from the early 18th century.