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Evidence of Asteroid Killing Dinasour
In 1980 physicist Luis Alvarez and his son, geologist Walter Alvarez, both of the University of California, hypothesized that dinosaurs got extinct as the result of a giant asteroid that hit Earth, sending smoke, dust, and iridium into the atmosphere. That smokescreen blocked the sun, lowering the earth's temperature, killing plants (but not seeds or roots), and eventually many species of animals, including dinosaurs. -
Retrovirus VIH (1980) Medicina
The virus was isolated in 1983 by French and American researchers working independently. Both claimed they had found it first and called it different things; in 1986 an international commission decided that the researchers had found the same virus and that it should be called human immunodeficiency virus, or HIV. https://medlineplus.gov/spanish/hivaids.html -
IBM introduces its personal computer (PC)
IBM's brand recognition, along with a massive marketing campaign, ignites the fast growth of the personal computer market with the announcement of its own personal computer (PC). The first IBM PC, formally known as the IBM Model 5150, was based on a 4.77 MHz Intel 8088 microprocessor and used Microsoft´s MS-DOS operating system. -
The first commercial U.S. cell phone weighed two pounds.
The Motorola DynaTac 8000X could only store 30 numbers, charging it took 10 hours, it only offered 30 minutes of talk time, it weighed two pounds, and came with an exorbitant price tag: $3,995—or $9,410 in today's dollars.
