Justus von Liebig, a German chemist, died Apr. 18, 1873, at the age of 69.  Liebig was a pioneer in organic chemistry, agricultural chemistry, and ...

Jean-Baptiste Perrin, a French physical chemist, died Apr. 17, 1942, at the age of 71.  Perrin's youthful proficiency in math earned him entrance ...

Frederic Ward Putnam, an American anthropologist, was born Apr. 16, 1839. Putnam had been curator of the Peabody Museum of American Archaeology ...

Friedrich Georg Wilhelm von Struve, a German/Danish/Russian astronomer, was born Apr. 15, 1793. Struve became director of the Dorpat Observatory ...

Thomas Thomson, a Scottish chemist, was born Apr. 12, 1773.   There were many significant chemists working in this era – Jons Berzelius, John ...

Lothar Meyer, a German chemist, died Apr. 11, 1895, at the age of 64.

Marshall Warrenn Nirenberg, an American biochemist, was born Apr. 10, 1927, in New York City.

George Peacock, an English mathematician, was born Apr. 9, 1791.

Johann Salomo Christoph Schweigger, a German physicist and chemist, was born Apr. 8, 1779, in Erlangen, where he eventually became professor of ...

Maffeo Barberini, an Italian cleric, was baptized Apr. 5, 1568. He is better known as Pope Urban VIII, a post he was elected to on Aug. 6, 1623 ...

HMS Fury, a British Royal Navy vessel, was launched Apr. 4, 1814.  To the best of my knowledge, we have featured a ship as Scientist of the Day ...

Charles Wilkes, an American naval officer, was born Apr. 3, 1798.  In 1838, the United States launched its first national voyage of exploration ...