Gancedo's fall to Earth occurred between 4,000 and 6,000 years ago. Locals knew of the fall for centuries, even making iron tools from meteorites found in the strewnfield. In the 16th century, the Spanish became interested in stories of a piece of iron that fell from the sky, and in 1774 don BartolomÃ© Francsico de Maguna led an expedition that came across a mass of iron, referred to as MesÃn de Fierro ("Table of Iron" in Spanish). Another 1,400-pound fragment from Campo del Cielo named Otumpa now resides at the British Museum in London. With more than 100 tons of meteorite recovered, Campo del Cielo is the top producer in terms of pure meteorite mass worldwide.
The Campo del Cielo strewnfield extends over an ellipse 3 km wide by 19 km long over an area northwest of Buenos Aires, and meteorites found here have a polycrystalline coarse octahedrite composition characteristic of iron-nickel meteorites. They are also unusually pure even among iron-nickel meteorites, consisting of 93% iron. Most of the remaining 7% is nickel, and less than 1% are trace elements.
The evidence here is that a very dense asteroid, weighing a minimum of 100 tons but probably several times that, smashed into the Earth about five thousand years ago. Yet, all life on Earth was not wiped out, as is repeatedly suggested might happen whenever a similarly sized asteroid zips close past the Earth. In fact, there is no evidence this impact had any significant global environmental effects.
Remember this the next time another asteroid of similar size zips past the Earth and the media doom-sayers begin to sing their siren song again.
A person can end up in one of these databases by doing nothing more than sitting on a public park bench or chatting with an officer on the street. Once there, these records can linger forever and be used by police agencies to track movements, habits, acquaintances and associations – even a person’s marital and job status, The Post and Courier found in an investigation of police practices around the nation.
... What began as a method for linking suspicious behavior to crime has morphed into a practice that threatens to turn local police departments into miniature versions of the National Security Agency. In the process, critics contend, police risk trampling constitutional rights, tarnishing innocent people and further eroding public trust.
Banks know a tremendous amount of personal information about their customers — what better insight is there than how people spend their money? — but given the amount of trust that is assumed in a banking relationship, they have to be especially careful about showing their customers they know them without creeping them out.
... "There are a lot of things that we could do with the data. But we have a strong set of rules and governance around how we use it, and we don't ever cross that line. We've done customer research to identify where that line is, and believe me, there is a lot of space between how we can improve the relevance and timeliness of what we say to our customers and that line.
Difficult not to be queasy about all this.
"When the going gets weird, the weird turn pro..." -- Hunter S. Thompson