Albert Einstein
Albert Einstein (1879-1955) 1
Stephen Hawking
Stephen Hawking, 74 2
Benjamin Franklin
Benjamin Franklin (1706-1790) 3
Sir Isaac Newton
Sir Isaac Newton (1643-1727) 4
Charles Darwin
Charles Darwin (1809-1882) 5
Galileo Galilei
Galileo Galilei (1564-1642) 6
Jane Goodall
Jane Goodall, 82 7
George Washington Carver
George Washington Carver (1864-1943) 8
Madame Curie
Madame Curie (1867-1934) 9
Neil deGrasse Tyson
Neil deGrasse Tyson, 58 10
Carl Sagan
Carl Sagan (1934-1996) 11
Joseph Hooton Taylor Jr.
Joseph Hooton Taylor Jr., 75 12
Sigmund Freud
Sigmund Freud (1856-1939) 13
Louis Pasteur
Louis Pasteur (1822-1895) 14
Rachel Carson
Rachel Carson (1907-1964) 15
Spencer Silver
Spencer Silver, 75 16
August Kekule
August Kekule (1820-1896) 17
Samuel Morse
Samuel Morse (1791-1872) 18
Alfred Nobel
Alfred Nobel (1833-1896) 19
Chester Dewey
Chester Dewey (1784-1867) 20
Nicolaus Copernicus
Nicolaus Copernicus (1473-1543) 21
Temple Grandin
Temple Grandin, 69 22
Alfred Wegener
Alfred Wegener (1880-1930) 23
Brian Cox
Brian Cox, 48 24
Alexander Fleming
Alexander Fleming (1881-1955) 25
Tim Berners Lee
Tim Berners Lee, 61 26
Howard Carter
Howard Carter (1874-1939) 27
Jonas Salk
Jonas Salk (1914-1995) 28
Garrett Morgan
Garrett Morgan (1877-1963) 29
John Muir
John Muir (1838-1914) 30
Gregor Mendel
Gregor Mendel (1822-1884) 31
Erno Rubik
Erno Rubik, 72 32
Jacques Cousteau
Jacques Cousteau (1910-1997) 33
Dmitri Mendeleev
Dmitri Mendeleev (1834-1907) 34
Michio Kaku
Michio Kaku, 69 35
Niels Bohr
Niels Bohr (1885-1962) 36
Bob Pflugfelder
Bob Pflugfelder, 48 37
Michael Faraday
Michael Faraday (1791-1867) 38
Charles Babbage
Charles Babbage (1791-1871) 39
BF Skinner
BF Skinner (1904-1990) 40
Philo Farnsworth
Philo Farnsworth (1906-1971) 41
Artturi Ilmari Virtanen
Artturi Ilmari Virtanen (1895-1973) 42
David Suzuki
David Suzuki, 80 43
Benjamin Banneker
Benjamin Banneker (1731-1806) 44
Mary Anning
Mary Anning (1799-1847) 45
Dr Charles Drew
Dr Charles Drew (1904-1950) 46
Edwin Hubble
Edwin Hubble (1889-1953) 47
Johannes Kepler
Johannes Kepler (1571-1630) 48

Ranked by popularity based on boosts and other user activity.