From today's featured article
The 1867 Manhattan earthquake
struck Riley County
, in the United States on April 24. The strongest earthquake to originate in the state, it measured 5.1 on a seismic scale
based on reports of how strongly it was felt in the area. Its epicenter
was near the town of Manhattan
. On the Mercalli intensity scale
, its maximum perceived intensity was VII, "very strong". There were reports of minor damage in Kansas, Iowa
, and Missouri
, according to the U.S. Geological Survey
. It was felt as far away as Indiana
, and perhaps Ohio, though the latter reports have been questioned. Manhattan is near the Nemaha Ridge
, a long anticline
structure that is bounded by several faults. A 2016 hazard map from the U.S. Geological Survey estimated a 1% or lower risk for a major earthquake in Kansas for the following year, though the nearby Humboldt Fault Zone
continues to pose a threat to the city, and scientists from the agency think an earthquake of magnitude 7.0 remains possible. (Full article...
Did you know...
Parable of the Polygons
- ... that Parable of the Polygons (pictured), an interactive blog post based on game theory, shows that even a slight demand for diversity can reverse residential segregation?
- ... that when the first Essex County Executive was elected in New Jersey in 1978, The New York Times described the position as "considered by many to be second in power only to that of the Governor"?
- ... that former Spanish prime minister Manuel Azaña was arrested after the events of 6 October in Barcelona in 1934, despite having taken no part in them?
- ... that the Scandinavian-influenced pair-house shows that some level of ethnic diversity was accepted in early Mormon society?
- ... that Levering Smith, a US Navy officer, was cred with assisting the UK Polaris programme to finish "on time and on budget, an unprecedented feat in British naval history"?
- ... that the Eritrean Dahlak Archipelago once housed a thriving trading kingdom, the Dahlak sultanate?
- ... that an overloaded Kiribati ferry, said to be carrying 88 passengers and 35 tonnes of coconuts, broke in half and sank last January?
- ... that a letter by Maria Perkins, a literate slave, is the only record of her existence?
In the news
On this day...
April 24: Armenian Genocide Remembrance Day
The original Library of Congress building, Washington, D.C.
- 1479 BC – Thutmose III became the sixth Pharaoh of the Eighteenth Dynasty of Egypt, with his aunt Hatshepsut as co-regent.
- 1800 – The Library of Congress (building pictured), the de facto national library of the United States, was established as part of an act of Congress providing for the transfer of the nation's capital from Philadelphia to Washington, D.C.
- 1914 – The Franck–Hertz experiment, the first electrical measurement to clearly demonstrate quantum mechanics, was presented to the German Physical Society.
- 1980 – Eight U.S. servicemen died in Operation Eagle Claw, a failed attempt to rescue the captives in the Iran hostage crisis.
- 2013 – A building in the Savar Upazila of Dhaka, Bangladesh, collapsed, killing 1,134 people, making it the deadliest accidental structural failure in modern history.
Xu Guangqi (b. 1562) · G. Stanley Hall (d. 1924) · Kelly Clarkson (b. 1982)