De Vries was a Dutch botanist whose theory of biological mutation and rediscovery of Mendel's laws of heredity made possible the active investigation and universal acceptance of Darwin's theory of evolution. He held that new species are formed chiefly through mutations—sudden, unpredictable, inheritable changes in an individual organism. Teaching at the University of Amsterdam, he introduced the experimental study of evolution. What important evolution-related term did he introduce to science? Discuss
This is a national holiday in Lithuania marking the declaration of independence from Austrian, Prussian, and Russian occupation on February 16, 1918. Today, the anniversary is celebrated with festivals and fireworks, particularly in the capital city of Vilnius. Discuss
impotence, sterility - Impotence is the male's inability to copulate or get an erection; sterility is the inability of either a male or female to procreate. More...
Definition: (noun) The act or process of assigning numbers to phenomena according to a rule.
Synonyms: measuring.
Usage: The mensuration of the faculties of the mind has, I believe, no place in the catalogue of known arts. Discuss
Michel was a German woman who died in 1976 while undergoing exorcism treatments for demonic possession. She began suffering from seizures and depression when she was 16, the symptoms of which were not eased by conventional medical treatment. Convinced her condition was the result of demonic possession, Michel began a series of hour-long exorcism sessions that lasted nearly a year and ended with her death. Why were her parents and the priests who performed the exorcisms convicted of manslaughter? Discuss
The USS Philadelphia was a 36-gun frigate that ran aground in October 1803 while blockading the coast of Tripoli. After some consideration, the Americans decided that the ship was too powerful a weapon to remain in enemy hands and sent a party of soldiers to recapture the ship and burn it. In carrying out "the most bold and daring act of the age," the assaulting party used what ruse to sail up to the ship without arousing the suspicion of its Tripolitan guards? Discuss