Daily Archives: June 1, 2013

Quotation: Booker T. Washington on assistance to the weak


Assistance given to the weak makes the one who gives it strong.

Booker T. Washington (1856-1915) Discuss

Today’s Birthday: DR. HENRY FAULDS (1843) Pioneered the study of fingerprints


Dr. Henry Faulds (1843)

Faulds was a Scottish doctor and scientist who pioneered the study of fingerprints as forensic evidence. He first became interested in fingerprints after noticing the imprints left by craftsmen’s fingertips in ancient pottery. Convinced that fingerprints could be a valuable investigative tool, Faulds unsuccessfully tried to convince Scotland Yard to employ his methods. His findings went largely unnoticed during his lifetime. How does Darwin‘s cousin factor into a controversy over Faulds’s work? More… Discuss

 

This Day in the Yesteryear: FORMER SLAVE ISABELLA BAUMFREE BECOMES SOJOURNER TRUTH (1843)


Former Slave Isabella Baumfree Becomes Sojourner Truth (1843)

Born into slavery in New York, Baumfree had four different masters before escaping with her infant daughter in 1826, one year before the state abolished slavery. She traveled and championed abolition, changing her name in 1843. Her dictated memoirs were published as The Narrative of Sojourner Truth: A Northern Slave. In 1851, she delivered what is now known as the “Ain’t I a Woman?” speech at the Women’s Rights Convention. How did the first report of the speech differ from later accounts? More… Discuss

 

MUTANT COCKROACHES EVOLVE BAIT AVOIDANCE MECHANISM


Female German Cockroach with ootheca.

Female German Cockroach with ootheca. (Photo credit: Wikipedia)

Mutant Cockroaches Evolve Bait Avoidance Mechanism

Cockroaches have survived and thrived on Earth for hundreds of millions of years, but the hardy pests do—or at least did—have one fatal flaw: a sweet tooth. For years, humans have exploited this weakness in their efforts to fight cockroach infestations, baiting the pests with glucose-coated insecticide. Unfortunately, it seems that at least some German cockroaches have evolved a protective aversion to glucose, perceiving it as bitter rather than sweet. More… Discuss